/*
 * FreeRTOS Kernel V10.3.1
 * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * http://www.FreeRTOS.org
 * http://aws.amazon.com/freertos
 *
 * 1 tab == 4 spaces!
 */

/* Standard includes. */
#include <stdlib.h>
#include <string.h>

/* Defining MPU_WRAPPERS_INCLUDED_FROM_API_FILE prevents task.h from redefining
all the API functions to use the MPU wrappers.  That should only be done when
task.h is included from an application file. */
#define MPU_WRAPPERS_INCLUDED_FROM_API_FILE

/* FreeRTOS includes. */
#include "FreeRTOS.h"
#include "stack_macros.h"
#include "task.h"
#include "timers.h"

/* Lint e9021, e961 and e750 are suppressed as a MISRA exception justified
because the MPU ports require MPU_WRAPPERS_INCLUDED_FROM_API_FILE to be defined
for the header files above, but not in this file, in order to generate the
correct privileged Vs unprivileged linkage and placement. */
#undef MPU_WRAPPERS_INCLUDED_FROM_API_FILE /*lint !e961 !e750 !e9021. */

/* Set configUSE_STATS_FORMATTING_FUNCTIONS to 2 to include the stats formatting
functions but without including stdio.h here. */
#if (configUSE_STATS_FORMATTING_FUNCTIONS == 1)
/* At the bottom of this file are two optional functions that can be used
to generate human readable text from the raw data generated by the
uxTaskGetSystemState() function.  Note the formatting functions are provided
for convenience only, and are NOT considered part of the kernel. */
#    include <stdio.h>
#endif /* configUSE_STATS_FORMATTING_FUNCTIONS == 1 ) */

#if (configUSE_PREEMPTION == 0)
/* If the cooperative scheduler is being used then a yield should not be
performed just because a higher priority task has been woken. */
#    define taskYIELD_IF_USING_PREEMPTION()
#else
#    define taskYIELD_IF_USING_PREEMPTION() portYIELD_WITHIN_API()
#endif

/* Values that can be assigned to the ucNotifyState member of the TCB. */
#define taskNOT_WAITING_NOTIFICATION ((uint8_t)0)
#define taskWAITING_NOTIFICATION ((uint8_t)1)
#define taskNOTIFICATION_RECEIVED ((uint8_t)2)

/*
 * The value used to fill the stack of a task when the task is created.  This
 * is used purely for checking the high water mark for tasks.
 */
#define tskSTACK_FILL_BYTE (0xa5U)

/* Bits used to recored how a task's stack and TCB were allocated. */
#define tskDYNAMICALLY_ALLOCATED_STACK_AND_TCB ((uint8_t)0)
#define tskSTATICALLY_ALLOCATED_STACK_ONLY ((uint8_t)1)
#define tskSTATICALLY_ALLOCATED_STACK_AND_TCB ((uint8_t)2)

/* If any of the following are set then task stacks are filled with a known
value so the high water mark can be determined.  If none of the following are
set then don't fill the stack so there is no unnecessary dependency on memset.
*/
#if ( \
    (configCHECK_FOR_STACK_OVERFLOW > 1) || (configUSE_TRACE_FACILITY == 1) || \
    (INCLUDE_uxTaskGetStackHighWaterMark == 1) || \
    (INCLUDE_uxTaskGetStackHighWaterMark2 == 1))
#    define tskSET_NEW_STACKS_TO_KNOWN_VALUE 1
#else
#    define tskSET_NEW_STACKS_TO_KNOWN_VALUE 0
#endif

/*
 * Macros used by vListTask to indicate which state a task is in.
 */
#define tskRUNNING_CHAR ('X')
#define tskBLOCKED_CHAR ('B')
#define tskREADY_CHAR ('R')
#define tskDELETED_CHAR ('D')
#define tskSUSPENDED_CHAR ('S')

/*
 * Some kernel aware debuggers require the data the debugger needs access to be
 * global, rather than file scope.
 */
#ifdef portREMOVE_STATIC_QUALIFIER
#    define static
#endif

/* The name allocated to the Idle task.  This can be overridden by defining
configIDLE_TASK_NAME in FreeRTOSConfig.h. */
#ifndef configIDLE_TASK_NAME
#    define configIDLE_TASK_NAME "IDLE"
#endif

#if (configUSE_PORT_OPTIMISED_TASK_SELECTION == 0)

/* If configUSE_PORT_OPTIMISED_TASK_SELECTION is 0 then task selection is
performed in a generic way that is not optimised to any particular
microcontroller architecture. */

/* uxTopReadyPriority holds the priority of the highest priority ready
state task. */
#    define taskRECORD_READY_PRIORITY(uxPriority) \
        { \
            if ((uxPriority) > uxTopReadyPriority) { \
                uxTopReadyPriority = (uxPriority); \
            } \
        } /* taskRECORD_READY_PRIORITY */

/*-----------------------------------------------------------*/

#    define taskSELECT_HIGHEST_PRIORITY_TASK() \
        { \
            UBaseType_t uxTopPriority = uxTopReadyPriority; \
\
            /* Find the highest priority queue that contains ready tasks. */ \
            while (listLIST_IS_EMPTY(&(pxReadyTasksLists[uxTopPriority]))) { \
                configASSERT(uxTopPriority); \
                --uxTopPriority; \
            } \
\
            /* listGET_OWNER_OF_NEXT_ENTRY indexes through the list, so the \
            tasks of \
            the	same priority get an equal share of the processor time. */ \
            listGET_OWNER_OF_NEXT_ENTRY( \
                pxCurrentTCB, &(pxReadyTasksLists[uxTopPriority])); \
            uxTopReadyPriority = uxTopPriority; \
        } /* taskSELECT_HIGHEST_PRIORITY_TASK */

/*-----------------------------------------------------------*/

/* Define away taskRESET_READY_PRIORITY() and portRESET_READY_PRIORITY() as
they are only required when a port optimised method of task selection is
being used. */
#    define taskRESET_READY_PRIORITY(uxPriority)
#    define portRESET_READY_PRIORITY(uxPriority, uxTopReadyPriority)

#else /* configUSE_PORT_OPTIMISED_TASK_SELECTION */

/* If configUSE_PORT_OPTIMISED_TASK_SELECTION is 1 then task selection is
performed in a way that is tailored to the particular microcontroller
architecture being used. */

/* A port optimised version is provided.  Call the port defined macros. */
#    define taskRECORD_READY_PRIORITY(uxPriority) \
        portRECORD_READY_PRIORITY(uxPriority, uxTopReadyPriority)

/*-----------------------------------------------------------*/

#    define taskSELECT_HIGHEST_PRIORITY_TASK() \
        { \
            UBaseType_t uxTopPriority; \
\
            /* Find the highest priority list that contains ready tasks. */ \
            portGET_HIGHEST_PRIORITY(uxTopPriority, uxTopReadyPriority); \
            configASSERT( \
                listCURRENT_LIST_LENGTH(&(pxReadyTasksLists[uxTopPriority])) > \
                0); \
            listGET_OWNER_OF_NEXT_ENTRY( \
                pxCurrentTCB, &(pxReadyTasksLists[uxTopPriority])); \
        } /* taskSELECT_HIGHEST_PRIORITY_TASK() */

/*-----------------------------------------------------------*/

/* A port optimised version is provided, call it only if the TCB being reset
is being referenced from a ready list.  If it is referenced from a delayed
or suspended list then it won't be in a ready list. */
#    define taskRESET_READY_PRIORITY(uxPriority) \
        { \
            if (listCURRENT_LIST_LENGTH(&(pxReadyTasksLists[(uxPriority)])) == \
                (UBaseType_t)0) { \
                portRESET_READY_PRIORITY((uxPriority), (uxTopReadyPriority)); \
            } \
        }

#endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */

/*-----------------------------------------------------------*/

/* pxDelayedTaskList and pxOverflowDelayedTaskList are switched when the tick
count overflows. */
#define taskSWITCH_DELAYED_LISTS() \
    { \
        List_t *pxTemp; \
\
        /* The delayed tasks list should be empty when the lists are switched. \
         */ \
        configASSERT((listLIST_IS_EMPTY(pxDelayedTaskList))); \
\
        pxTemp = pxDelayedTaskList; \
        pxDelayedTaskList = pxOverflowDelayedTaskList; \
        pxOverflowDelayedTaskList = pxTemp; \
        xNumOfOverflows++; \
        prvResetNextTaskUnblockTime(); \
    }

/*-----------------------------------------------------------*/

/*
 * Place the task represented by pxTCB into the appropriate ready list for
 * the task.  It is inserted at the end of the list.
 */
#define prvAddTaskToReadyList(pxTCB) \
    traceMOVED_TASK_TO_READY_STATE(pxTCB); \
    taskRECORD_READY_PRIORITY((pxTCB)->uxPriority); \
    vListInsertEnd( \
        &(pxReadyTasksLists[(pxTCB)->uxPriority]), \
        &((pxTCB)->xStateListItem)); \
    tracePOST_MOVED_TASK_TO_READY_STATE(pxTCB)
/*-----------------------------------------------------------*/

/*
 * Several functions take an TaskHandle_t parameter that can optionally be NULL,
 * where NULL is used to indicate that the handle of the currently executing
 * task should be used in place of the parameter.  This macro simply checks to
 * see if the parameter is NULL and returns a pointer to the appropriate TCB.
 */
#define prvGetTCBFromHandle(pxHandle) \
    (((pxHandle) == NULL) ? pxCurrentTCB : (pxHandle))

/* The item value of the event list item is normally used to hold the priority
of the task to which it belongs (coded to allow it to be held in reverse
priority order).  However, it is occasionally borrowed for other purposes.  It
is important its value is not updated due to a task priority change while it is
being used for another purpose.  The following bit definition is used to inform
the scheduler that the value should not be changed - in which case it is the
responsibility of whichever module is using the value to ensure it gets set back
to its original value when it is released. */
#if (configUSE_16_BIT_TICKS == 1)
#    define taskEVENT_LIST_ITEM_VALUE_IN_USE 0x8000U
#else
#    define taskEVENT_LIST_ITEM_VALUE_IN_USE 0x80000000UL
#endif

/*
 * Task control block.  A task control block (TCB) is allocated for each task,
 * and stores task state information, including a pointer to the task's context
 * (the task's run time environment, including register values)
 */
typedef struct tskTaskControlBlock /* The old naming convention is used to
                                      prevent breaking kernel aware debuggers.
                                    */
{
    volatile StackType_t
        *pxTopOfStack; /*< Points to the location of the last item placed on the
                          tasks stack.  THIS MUST BE THE FIRST MEMBER OF THE TCB
                          STRUCT. */

#if (portUSING_MPU_WRAPPERS == 1)
    xMPU_SETTINGS xMPUSettings; /*< The MPU settings are defined as part of the
                                   port layer.  THIS MUST BE THE SECOND MEMBER
                                   OF THE TCB STRUCT. */
#endif

    ListItem_t xStateListItem; /*< The list that the state list item of a task
                                  is reference from denotes the state of that
                                  task (Ready, Blocked, Suspended ). */
    ListItem_t
        xEventListItem; /*< Used to reference a task from an event list. */
    UBaseType_t
        uxPriority; /*< The priority of the task.  0 is the lowest priority. */
    StackType_t *pxStack; /*< Points to the start of the stack. */
    char				pcTaskName[ configMAX_TASK_NAME_LEN ];/*< Descriptive name given to the task when created.  Facilitates debugging only. */ /*lint !e971 Unqualified char types are allowed for strings and single characters only. */

#if ((portSTACK_GROWTH > 0) || (configRECORD_STACK_HIGH_ADDRESS == 1))
    StackType_t
        *pxEndOfStack; /*< Points to the highest valid address for the stack. */
#endif

#if (portCRITICAL_NESTING_IN_TCB == 1)
    UBaseType_t uxCriticalNesting; /*< Holds the critical section nesting depth
                                      for ports that do not maintain their own
                                      count in the port layer. */
#endif

#if (configUSE_TRACE_FACILITY == 1)
    UBaseType_t
        uxTCBNumber; /*< Stores a number that increments each time a TCB is
                        created.  It allows debuggers to determine when a task
                        has been deleted and then recreated. */
    UBaseType_t uxTaskNumber; /*< Stores a number specifically for use by third
                                 party trace code. */
#endif

#if (configUSE_MUTEXES == 1)
    UBaseType_t
        uxBasePriority; /*< The priority last assigned to the task - used by the
                           priority inheritance mechanism. */
    UBaseType_t uxMutexesHeld;
#endif

#if (configUSE_APPLICATION_TASK_TAG == 1)
    TaskHookFunction_t pxTaskTag;
#endif

#if (configNUM_THREAD_LOCAL_STORAGE_POINTERS > 0)
    void *pvThreadLocalStoragePointers[configNUM_THREAD_LOCAL_STORAGE_POINTERS];
#endif

#if (configGENERATE_RUN_TIME_STATS == 1)
    uint32_t ulRunTimeCounter; /*< Stores the amount of time the task has spent
                                  in the Running state. */
#endif

#if (configUSE_NEWLIB_REENTRANT == 1)
    /* Allocate a Newlib reent structure that is specific to this task.
    Note Newlib support has been included by popular demand, but is not
    used by the FreeRTOS maintainers themselves.  FreeRTOS is not
    responsible for resulting newlib operation.  User must be familiar with
    newlib and must provide system-wide implementations of the necessary
    stubs. Be warned that (at the time of writing) the current newlib design
    implements a system-wide malloc() that must be provided with locks.

    See the third party link
    http://www.nadler.com/embedded/newlibAndFreeRTOS.html for additional
    information. */
    struct _reent xNewLib_reent;
#endif

#if (configUSE_TASK_NOTIFICATIONS == 1)
    volatile uint32_t ulNotifiedValue;
    volatile uint8_t ucNotifyState;
#endif

/* See the comments in FreeRTOS.h with the definition of
tskSTATIC_AND_DYNAMIC_ALLOCATION_POSSIBLE. */
#if (tskSTATIC_AND_DYNAMIC_ALLOCATION_POSSIBLE != 0) /*lint !e731 !e9029 Macro \
                                                        has been consolidated \
                                                        for readability \
                                                        reasons. */
    uint8_t ucStaticallyAllocated; /*< Set to pdTRUE if the task is a statically
                                      allocated to ensure no attempt is made to
                                      free the memory. */
#endif

#if (INCLUDE_xTaskAbortDelay == 1)
    uint8_t ucDelayAborted;
#endif

#if (configUSE_POSIX_ERRNO == 1)
    int iTaskErrno;
#endif

} tskTCB;

/* The old tskTCB name is maintained above then typedefed to the new TCB_t name
below to enable the use of older kernel aware debuggers. */
typedef tskTCB TCB_t;

/*lint -save -e956 A manual analysis and inspection has been used to determine
which static variables must be declared volatile. */
PRIVILEGED_DATA TCB_t *volatile pxCurrentTCB = NULL;

/* Lists for ready and blocked tasks. --------------------
xDelayedTaskList1 and xDelayedTaskList2 could be move to function scople but
doing so breaks some kernel aware debuggers and debuggers that rely on removing
the static qualifier. */
PRIVILEGED_DATA static List_t
    pxReadyTasksLists[configMAX_PRIORITIES]; /*< Prioritised ready tasks. */
PRIVILEGED_DATA static List_t xDelayedTaskList1; /*< Delayed tasks. */
PRIVILEGED_DATA static List_t
    xDelayedTaskList2; /*< Delayed tasks (two lists are used - one for delays
                          that have overflowed the current tick count. */
PRIVILEGED_DATA static List_t
    *volatile pxDelayedTaskList; /*< Points to the delayed task list currently
                                    being used. */
PRIVILEGED_DATA static List_t
    *volatile pxOverflowDelayedTaskList; /*< Points to the delayed task list
                                            currently being used to hold tasks
                                            that have overflowed the current
                                            tick count. */
PRIVILEGED_DATA static List_t
    xPendingReadyList; /*< Tasks that have been readied while the scheduler was
                          suspended.  They will be moved to the ready list when
                          the scheduler is resumed. */

#if (INCLUDE_vTaskDelete == 1)

PRIVILEGED_DATA static List_t
    xTasksWaitingTermination; /*< Tasks that have been deleted - but their
                                 memory not yet freed. */
PRIVILEGED_DATA static volatile UBaseType_t uxDeletedTasksWaitingCleanUp =
    (UBaseType_t)0U;

#endif

#if (INCLUDE_vTaskSuspend == 1)

PRIVILEGED_DATA static List_t
    xSuspendedTaskList; /*< Tasks that are currently suspended. */

#endif

/* Global POSIX errno. Its value is changed upon context switching to match
the errno of the currently running task. */
#if (configUSE_POSIX_ERRNO == 1)
int FreeRTOS_errno = 0;
#endif

/* Other file private variables. --------------------------------*/
PRIVILEGED_DATA static volatile UBaseType_t uxCurrentNumberOfTasks =
    (UBaseType_t)0U;
PRIVILEGED_DATA static volatile TickType_t xTickCount =
    (TickType_t)configINITIAL_TICK_COUNT;
PRIVILEGED_DATA static volatile UBaseType_t uxTopReadyPriority =
    tskIDLE_PRIORITY;
PRIVILEGED_DATA static volatile BaseType_t xSchedulerRunning = pdFALSE;
PRIVILEGED_DATA static volatile TickType_t xPendedTicks = (TickType_t)0U;
PRIVILEGED_DATA static volatile BaseType_t xYieldPending = pdFALSE;
PRIVILEGED_DATA static volatile BaseType_t xNumOfOverflows = (BaseType_t)0;
PRIVILEGED_DATA static UBaseType_t uxTaskNumber = (UBaseType_t)0U;
PRIVILEGED_DATA static volatile TickType_t xNextTaskUnblockTime =
    (TickType_t)0U; /* Initialised to portMAX_DELAY before the scheduler starts.
                     */
PRIVILEGED_DATA static TaskHandle_t xIdleTaskHandle =
    NULL; /*< Holds the handle of the idle task.  The idle task is created
             automatically when the scheduler is started. */

/* Context switches are held pending while the scheduler is suspended.  Also,
interrupts must not manipulate the xStateListItem of a TCB, or any of the
lists the xStateListItem can be referenced from, if the scheduler is suspended.
If an interrupt needs to unblock a task while the scheduler is suspended then it
moves the task's event list item into the xPendingReadyList, ready for the
kernel to move the task from the pending ready list into the real ready list
when the scheduler is unsuspended.  The pending ready list itself can only be
accessed from a critical section. */
PRIVILEGED_DATA static volatile UBaseType_t uxSchedulerSuspended =
    (UBaseType_t)pdFALSE;

#if (configGENERATE_RUN_TIME_STATS == 1)

/* Do not move these variables to function scope as doing so prevents the
code working with debuggers that need to remove the static qualifier. */
PRIVILEGED_DATA static uint32_t ulTaskSwitchedInTime =
    0UL; /*< Holds the value of a timer/counter the last time a task was
            switched in. */
PRIVILEGED_DATA static uint32_t ulTotalRunTime =
    0UL; /*< Holds the total amount of execution time as defined by the run time
            counter clock. */

#endif

/*lint -restore */

/*-----------------------------------------------------------*/

/* Callback function prototypes. --------------------------*/
#if (configCHECK_FOR_STACK_OVERFLOW > 0)

extern void vApplicationStackOverflowHook(TaskHandle_t xTask, char *pcTaskName);

#endif

#if (configUSE_TICK_HOOK > 0)

extern void vApplicationTickHook(
    void); /*lint !e526 Symbol not defined as it is an application callback. */

#endif

#if (configSUPPORT_STATIC_ALLOCATION == 1)

extern void vApplicationGetIdleTaskMemory(
    StaticTask_t **ppxIdleTaskTCBBuffer,
    StackType_t **ppxIdleTaskStackBuffer,
    uint32_t *pulIdleTaskStackSize); /*lint !e526 Symbol not defined as it is an
                                        application callback. */

#endif

/* File private functions. --------------------------------*/

/**
 * Utility task that simply returns pdTRUE if the task referenced by xTask is
 * currently in the Suspended state, or pdFALSE if the task referenced by xTask
 * is in any other state.
 */
#if (INCLUDE_vTaskSuspend == 1)

static BaseType_t prvTaskIsTaskSuspended(const TaskHandle_t xTask)
    PRIVILEGED_FUNCTION;

#endif /* INCLUDE_vTaskSuspend */

/*
 * Utility to ready all the lists used by the scheduler.  This is called
 * automatically upon the creation of the first task.
 */
static void prvInitialiseTaskLists(void) PRIVILEGED_FUNCTION;

/*
 * The idle task, which as all tasks is implemented as a never ending loop.
 * The idle task is automatically created and added to the ready lists upon
 * creation of the first user task.
 *
 * The portTASK_FUNCTION_PROTO() macro is used to allow port/compiler specific
 * language extensions.  The equivalent prototype for this function is:
 *
 * void prvIdleTask( void *pvParameters );
 *
 */
static portTASK_FUNCTION_PROTO(prvIdleTask, pvParameters);

/*
 * Utility to free all memory allocated by the scheduler to hold a TCB,
 * including the stack pointed to by the TCB.
 *
 * This does not free memory allocated by the task itself (i.e. memory
 * allocated by calls to pvPortMalloc from within the tasks application code).
 */
#if (INCLUDE_vTaskDelete == 1)

static void prvDeleteTCB(TCB_t *pxTCB) PRIVILEGED_FUNCTION;

#endif

/*
 * Used only by the idle task.  This checks to see if anything has been placed
 * in the list of tasks waiting to be deleted.  If so the task is cleaned up
 * and its TCB deleted.
 */
static void prvCheckTasksWaitingTermination(void) PRIVILEGED_FUNCTION;

/*
 * The currently executing task is entering the Blocked state.  Add the task to
 * either the current or the overflow delayed task list.
 */
static void prvAddCurrentTaskToDelayedList(
    TickType_t xTicksToWait,
    const BaseType_t xCanBlockIndefinitely) PRIVILEGED_FUNCTION;

/*
 * Fills an TaskStatus_t structure with information on each task that is
 * referenced from the pxList list (which may be a ready list, a delayed list,
 * a suspended list, etc.).
 *
 * THIS FUNCTION IS INTENDED FOR DEBUGGING ONLY, AND SHOULD NOT BE CALLED FROM
 * NORMAL APPLICATION CODE.
 */
#if (configUSE_TRACE_FACILITY == 1)

static UBaseType_t prvListTasksWithinSingleList(
    TaskStatus_t *pxTaskStatusArray,
    List_t *pxList,
    eTaskState eState) PRIVILEGED_FUNCTION;

#endif

/*
 * Searches pxList for a task with name pcNameToQuery - returning a handle to
 * the task if it is found, or NULL if the task is not found.
 */
#if (INCLUDE_xTaskGetHandle == 1)

static TCB_t *prvSearchForNameWithinSingleList(
    List_t *pxList,
    const char pcNameToQuery[]) PRIVILEGED_FUNCTION;

#endif

/*
 * When a task is created, the stack of the task is filled with a known value.
 * This function determines the 'high water mark' of the task stack by
 * determining how much of the stack remains at the original preset value.
 */
#if ( \
    (configUSE_TRACE_FACILITY == 1) || \
    (INCLUDE_uxTaskGetStackHighWaterMark == 1) || \
    (INCLUDE_uxTaskGetStackHighWaterMark2 == 1))

static configSTACK_DEPTH_TYPE prvTaskCheckFreeStackSpace(
    const uint8_t *pucStackByte) PRIVILEGED_FUNCTION;

#endif

/*
 * Return the amount of time, in ticks, that will pass before the kernel will
 * next move a task from the Blocked state to the Running state.
 *
 * This conditional compilation should use inequality to 0, not equality to 1.
 * This is to ensure portSUPPRESS_TICKS_AND_SLEEP() can be called when user
 * defined low power mode implementations require configUSE_TICKLESS_IDLE to be
 * set to a value other than 1.
 */
#if (configUSE_TICKLESS_IDLE != 0)

static TickType_t prvGetExpectedIdleTime(void) PRIVILEGED_FUNCTION;

#endif

/*
 * Set xNextTaskUnblockTime to the time at which the next Blocked state task
 * will exit the Blocked state.
 */
static void prvResetNextTaskUnblockTime(void);

#if ( \
    (configUSE_TRACE_FACILITY == 1) && \
    (configUSE_STATS_FORMATTING_FUNCTIONS > 0))

/*
 * Helper function used to pad task names with spaces when printing out
 * human readable tables of task information.
 */
static char *prvWriteNameToBuffer(char *pcBuffer, const char *pcTaskName)
    PRIVILEGED_FUNCTION;

#endif

/*
 * Called after a Task_t structure has been allocated either statically or
 * dynamically to fill in the structure's members.
 */
static void prvInitialiseNewTask(
    TaskFunction_t pxTaskCode,
    const char *const pcName, /*lint !e971 Unqualified char types are allowed
                                 for strings and single characters only. */
    const uint32_t ulStackDepth,
    void *const pvParameters,
    UBaseType_t uxPriority,
    TaskHandle_t *const pxCreatedTask,
    TCB_t *pxNewTCB,
    const MemoryRegion_t *const xRegions) PRIVILEGED_FUNCTION;

/*
 * Called after a new task has been created and initialised to place the task
 * under the control of the scheduler.
 */
static void prvAddNewTaskToReadyList(TCB_t *pxNewTCB) PRIVILEGED_FUNCTION;

/*
 * freertos_tasks_c_additions_init() should only be called if the user definable
 * macro FREERTOS_TASKS_C_ADDITIONS_INIT() is defined, as that is the only macro
 * called by the function.
 */
#ifdef FREERTOS_TASKS_C_ADDITIONS_INIT

static void freertos_tasks_c_additions_init(void) PRIVILEGED_FUNCTION;

#endif

/*-----------------------------------------------------------*/

#if (configSUPPORT_STATIC_ALLOCATION == 1)

TaskHandle_t xTaskCreateStatic(
    TaskFunction_t pxTaskCode,
    const char *const pcName, /*lint !e971 Unqualified char types are allowed
                                 for strings and single characters only. */
    const uint32_t ulStackDepth,
    void *const pvParameters,
    UBaseType_t uxPriority,
    StackType_t *const puxStackBuffer,
    StaticTask_t *const pxTaskBuffer)
{
    TCB_t *pxNewTCB;
    TaskHandle_t xReturn;

    configASSERT(puxStackBuffer != NULL);
    configASSERT(pxTaskBuffer != NULL);

#    if (configASSERT_DEFINED == 1)
    {
        /* Sanity check that the size of the structure used to declare a
        variable of type StaticTask_t equals the size of the real task
        structure. */
        volatile size_t xSize = sizeof(StaticTask_t);
        configASSERT(xSize == sizeof(TCB_t));
        (void)xSize; /* Prevent lint warning when configASSERT() is not used. */
    }
#    endif /* configASSERT_DEFINED */

    if ((pxTaskBuffer != NULL) && (puxStackBuffer != NULL)) {
        /* The memory used for the task's TCB and stack are passed into this
        function - use them. */
        pxNewTCB = (TCB_t *)
            pxTaskBuffer; /*lint !e740 !e9087 Unusual cast is ok as the
                             structures are designed to have the same alignment,
                             and the size is checked by an assert. */
        pxNewTCB->pxStack = (StackType_t *)puxStackBuffer;

#    if (tskSTATIC_AND_DYNAMIC_ALLOCATION_POSSIBLE != 0) /*lint !e731 !e9029 \
                                                            Macro has been \
                                                            consolidated for \
                                                            readability \
                                                            reasons. */
        {
            /* Tasks can be created statically or dynamically, so note this
            task was created statically in case the task is later deleted. */
            pxNewTCB->ucStaticallyAllocated =
                tskSTATICALLY_ALLOCATED_STACK_AND_TCB;
        }
#    endif /* tskSTATIC_AND_DYNAMIC_ALLOCATION_POSSIBLE */

        prvInitialiseNewTask(
            pxTaskCode,
            pcName,
            ulStackDepth,
            pvParameters,
            uxPriority,
            &xReturn,
            pxNewTCB,
            NULL);
        prvAddNewTaskToReadyList(pxNewTCB);
    } else {
        xReturn = NULL;
    }

    return xReturn;
}

#endif /* SUPPORT_STATIC_ALLOCATION */
/*-----------------------------------------------------------*/

#if ((portUSING_MPU_WRAPPERS == 1) && (configSUPPORT_STATIC_ALLOCATION == 1))

BaseType_t xTaskCreateRestrictedStatic(
    const TaskParameters_t *const pxTaskDefinition,
    TaskHandle_t *pxCreatedTask)
{
    TCB_t *pxNewTCB;
    BaseType_t xReturn = errCOULD_NOT_ALLOCATE_REQUIRED_MEMORY;

    configASSERT(pxTaskDefinition->puxStackBuffer != NULL);
    configASSERT(pxTaskDefinition->pxTaskBuffer != NULL);

    if ((pxTaskDefinition->puxStackBuffer != NULL) &&
        (pxTaskDefinition->pxTaskBuffer != NULL)) {
        /* Allocate space for the TCB.  Where the memory comes from depends
        on the implementation of the port malloc function and whether or
        not static allocation is being used. */
        pxNewTCB = (TCB_t *)pxTaskDefinition->pxTaskBuffer;

        /* Store the stack location in the TCB. */
        pxNewTCB->pxStack = pxTaskDefinition->puxStackBuffer;

#    if (tskSTATIC_AND_DYNAMIC_ALLOCATION_POSSIBLE != 0)
        {
            /* Tasks can be created statically or dynamically, so note this
            task was created statically in case the task is later deleted. */
            pxNewTCB->ucStaticallyAllocated =
                tskSTATICALLY_ALLOCATED_STACK_AND_TCB;
        }
#    endif /* tskSTATIC_AND_DYNAMIC_ALLOCATION_POSSIBLE */

        prvInitialiseNewTask(
            pxTaskDefinition->pvTaskCode,
            pxTaskDefinition->pcName,
            (uint32_t)pxTaskDefinition->usStackDepth,
            pxTaskDefinition->pvParameters,
            pxTaskDefinition->uxPriority,
            pxCreatedTask,
            pxNewTCB,
            pxTaskDefinition->xRegions);

        prvAddNewTaskToReadyList(pxNewTCB);
        xReturn = pdPASS;
    }

    return xReturn;
}

#endif /* ( portUSING_MPU_WRAPPERS == 1 ) && ( configSUPPORT_STATIC_ALLOCATION \
          == 1 ) */
/*-----------------------------------------------------------*/

#if ((portUSING_MPU_WRAPPERS == 1) && (configSUPPORT_DYNAMIC_ALLOCATION == 1))

BaseType_t xTaskCreateRestricted(
    const TaskParameters_t *const pxTaskDefinition,
    TaskHandle_t *pxCreatedTask)
{
    TCB_t *pxNewTCB;
    BaseType_t xReturn = errCOULD_NOT_ALLOCATE_REQUIRED_MEMORY;

    configASSERT(pxTaskDefinition->puxStackBuffer);

    if (pxTaskDefinition->puxStackBuffer != NULL) {
        /* Allocate space for the TCB.  Where the memory comes from depends
        on the implementation of the port malloc function and whether or
        not static allocation is being used. */
        pxNewTCB = (TCB_t *)pvPortMalloc(sizeof(TCB_t));

        if (pxNewTCB != NULL) {
            /* Store the stack location in the TCB. */
            pxNewTCB->pxStack = pxTaskDefinition->puxStackBuffer;

#    if (tskSTATIC_AND_DYNAMIC_ALLOCATION_POSSIBLE != 0)
            {
                /* Tasks can be created statically or dynamically, so note
                this task had a statically allocated stack in case it is
                later deleted.  The TCB was allocated dynamically. */
                pxNewTCB->ucStaticallyAllocated =
                    tskSTATICALLY_ALLOCATED_STACK_ONLY;
            }
#    endif /* tskSTATIC_AND_DYNAMIC_ALLOCATION_POSSIBLE */

            prvInitialiseNewTask(
                pxTaskDefinition->pvTaskCode,
                pxTaskDefinition->pcName,
                (uint32_t)pxTaskDefinition->usStackDepth,
                pxTaskDefinition->pvParameters,
                pxTaskDefinition->uxPriority,
                pxCreatedTask,
                pxNewTCB,
                pxTaskDefinition->xRegions);

            prvAddNewTaskToReadyList(pxNewTCB);
            xReturn = pdPASS;
        }
    }

    return xReturn;
}

#endif /* portUSING_MPU_WRAPPERS */
/*-----------------------------------------------------------*/

#if (configSUPPORT_DYNAMIC_ALLOCATION == 1)

BaseType_t xTaskCreate(
    TaskFunction_t pxTaskCode,
    const char *const pcName, /*lint !e971 Unqualified char types are allowed
                                 for strings and single characters only. */
    const configSTACK_DEPTH_TYPE usStackDepth,
    void *const pvParameters,
    UBaseType_t uxPriority,
    TaskHandle_t *const pxCreatedTask)
{
    TCB_t *pxNewTCB;
    BaseType_t xReturn;

/* If the stack grows down then allocate the stack then the TCB so the stack
does not grow into the TCB.  Likewise if the stack grows up then allocate
the TCB then the stack. */
#    if (portSTACK_GROWTH > 0)
    {
        /* Allocate space for the TCB.  Where the memory comes from depends on
        the implementation of the port malloc function and whether or not static
        allocation is being used. */
        pxNewTCB = (TCB_t *)pvPortMalloc(sizeof(TCB_t));

        if (pxNewTCB != NULL) {
            /* Allocate space for the stack used by the task being created.
            The base of the stack memory stored in the TCB so the task can
            be deleted later if required. */
            pxNewTCB->pxStack = (StackType_t *)pvPortMalloc((
                ((size_t)usStackDepth) *
                sizeof(StackType_t))); /*lint !e961 MISRA exception as the casts
                                          are only redundant for some ports. */

            if (pxNewTCB->pxStack == NULL) {
                /* Could not allocate the stack.  Delete the allocated TCB. */
                vPortFree(pxNewTCB);
                pxNewTCB = NULL;
            }
        }
    }
#    else /* portSTACK_GROWTH */
    {
        StackType_t *pxStack;

        /* Allocate space for the stack used by the task being created. */
        pxStack = pvPortMalloc(
            (((size_t)usStackDepth) *
             sizeof(StackType_t))); /*lint !e9079 All values returned by
                                       pvPortMalloc() have at least the
                                       alignment required by the MCU's stack and
                                       this allocation is the stack. */

        if (pxStack != NULL) {
            /* Allocate space for the TCB. */
            pxNewTCB = (TCB_t *)pvPortMalloc(sizeof(
                TCB_t)); /*lint !e9087 !e9079 All values returned by
                            pvPortMalloc() have at least the alignment required
                            by the MCU's stack, and the first member of TCB_t is
                            always a pointer to the task's stack. */

            if (pxNewTCB != NULL) {
                /* Store the stack location in the TCB. */
                pxNewTCB->pxStack = pxStack;
            } else {
                /* The stack cannot be used as the TCB was not created.  Free
                it again. */
                vPortFree(pxStack);
            }
        } else {
            pxNewTCB = NULL;
        }
    }
#    endif /* portSTACK_GROWTH */

    if (pxNewTCB != NULL) {
#    if (tskSTATIC_AND_DYNAMIC_ALLOCATION_POSSIBLE != 0) /*lint !e9029 !e731 \
                                                            Macro has been \
                                                            consolidated for \
                                                            readability \
                                                            reasons. */
        {
            /* Tasks can be created statically or dynamically, so note this
            task was created dynamically in case it is later deleted. */
            pxNewTCB->ucStaticallyAllocated =
                tskDYNAMICALLY_ALLOCATED_STACK_AND_TCB;
        }
#    endif /* tskSTATIC_AND_DYNAMIC_ALLOCATION_POSSIBLE */

        prvInitialiseNewTask(
            pxTaskCode,
            pcName,
            (uint32_t)usStackDepth,
            pvParameters,
            uxPriority,
            pxCreatedTask,
            pxNewTCB,
            NULL);
        prvAddNewTaskToReadyList(pxNewTCB);
        xReturn = pdPASS;
    } else {
        xReturn = errCOULD_NOT_ALLOCATE_REQUIRED_MEMORY;
    }

    return xReturn;
}

#endif /* configSUPPORT_DYNAMIC_ALLOCATION */
/*-----------------------------------------------------------*/

static void prvInitialiseNewTask(
    TaskFunction_t pxTaskCode,
    const char *const pcName, /*lint !e971 Unqualified char types are allowed
                                 for strings and single characters only. */
    const uint32_t ulStackDepth,
    void *const pvParameters,
    UBaseType_t uxPriority,
    TaskHandle_t *const pxCreatedTask,
    TCB_t *pxNewTCB,
    const MemoryRegion_t *const xRegions)
{
    StackType_t *pxTopOfStack;
    UBaseType_t x;

#if (portUSING_MPU_WRAPPERS == 1)
    /* Should the task be created in privileged mode? */
    BaseType_t xRunPrivileged;
    if ((uxPriority & portPRIVILEGE_BIT) != 0U) {
        xRunPrivileged = pdTRUE;
    } else {
        xRunPrivileged = pdFALSE;
    }
    uxPriority &= ~portPRIVILEGE_BIT;
#endif /* portUSING_MPU_WRAPPERS == 1 */

/* Avoid dependency on memset() if it is not required. */
#if (tskSET_NEW_STACKS_TO_KNOWN_VALUE == 1)
    {
        /* Fill the stack with a known value to assist debugging. */
        (void)memset(
            pxNewTCB->pxStack,
            (int)tskSTACK_FILL_BYTE,
            (size_t)ulStackDepth * sizeof(StackType_t));
    }
#endif /* tskSET_NEW_STACKS_TO_KNOWN_VALUE */

/* Calculate the top of stack address.  This depends on whether the stack
grows from high memory to low (as per the 80x86) or vice versa.
portSTACK_GROWTH is used to make the result positive or negative as required
by the port. */
#if (portSTACK_GROWTH < 0)
    {
        pxTopOfStack = &(pxNewTCB->pxStack[ulStackDepth - (uint32_t)1]);
        pxTopOfStack =
            (StackType_t
                 *)(((portPOINTER_SIZE_TYPE)pxTopOfStack) & (~((portPOINTER_SIZE_TYPE)portBYTE_ALIGNMENT_MASK))); /*lint !e923 !e9033 !e9078 MISRA exception.  Avoiding casts between pointers and integers is not practical.  Size differences accounted for using portPOINTER_SIZE_TYPE type.  Checked by assert(). */

        /* Check the alignment of the calculated top of stack is correct. */
        configASSERT(
            (((portPOINTER_SIZE_TYPE)pxTopOfStack &
              (portPOINTER_SIZE_TYPE)portBYTE_ALIGNMENT_MASK) == 0UL));

#    if (configRECORD_STACK_HIGH_ADDRESS == 1)
        {
            /* Also record the stack's high address, which may assist
            debugging. */
            pxNewTCB->pxEndOfStack = pxTopOfStack;
        }
#    endif /* configRECORD_STACK_HIGH_ADDRESS */
    }
#else /* portSTACK_GROWTH */
    {
        pxTopOfStack = pxNewTCB->pxStack;

        /* Check the alignment of the stack buffer is correct. */
        configASSERT(
            (((portPOINTER_SIZE_TYPE)pxNewTCB->pxStack &
              (portPOINTER_SIZE_TYPE)portBYTE_ALIGNMENT_MASK) == 0UL));

        /* The other extreme of the stack space is required if stack checking is
        performed. */
        pxNewTCB->pxEndOfStack =
            pxNewTCB->pxStack + (ulStackDepth - (uint32_t)1);
    }
#endif /* portSTACK_GROWTH */

    /* Store the task name in the TCB. */
    if (pcName != NULL) {
        for (x = (UBaseType_t)0; x < (UBaseType_t)configMAX_TASK_NAME_LEN;
             x++) {
            pxNewTCB->pcTaskName[x] = pcName[x];

            /* Don't copy all configMAX_TASK_NAME_LEN if the string is shorter
            than configMAX_TASK_NAME_LEN characters just in case the memory
            after the string is not accessible (extremely unlikely). */
            if (pcName[x] == (char)0x00) {
                break;
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
        }

        /* Ensure the name string is terminated in the case that the string
        length was greater or equal to configMAX_TASK_NAME_LEN. */
        pxNewTCB->pcTaskName[configMAX_TASK_NAME_LEN - 1] = '\0';
    } else {
        /* The task has not been given a name, so just ensure there is a NULL
        terminator when it is read out. */
        pxNewTCB->pcTaskName[0] = 0x00;
    }

    /* This is used as an array index so must ensure it's not too large.  First
    remove the privilege bit if one is present. */
    if (uxPriority >= (UBaseType_t)configMAX_PRIORITIES) {
        uxPriority = (UBaseType_t)configMAX_PRIORITIES - (UBaseType_t)1U;
    } else {
        mtCOVERAGE_TEST_MARKER();
    }

    pxNewTCB->uxPriority = uxPriority;
#if (configUSE_MUTEXES == 1)
    {
        pxNewTCB->uxBasePriority = uxPriority;
        pxNewTCB->uxMutexesHeld = 0;
    }
#endif /* configUSE_MUTEXES */

    vListInitialiseItem(&(pxNewTCB->xStateListItem));
    vListInitialiseItem(&(pxNewTCB->xEventListItem));

    /* Set the pxNewTCB as a link back from the ListItem_t.  This is so we can
    get back to	the containing TCB from a generic item in a list. */
    listSET_LIST_ITEM_OWNER(&(pxNewTCB->xStateListItem), pxNewTCB);

    /* Event lists are always in priority order. */
    listSET_LIST_ITEM_VALUE(
        &(pxNewTCB->xEventListItem),
        (TickType_t)configMAX_PRIORITIES -
            (TickType_t)uxPriority); /*lint !e961 MISRA exception as the casts
                                        are only redundant for some ports. */
    listSET_LIST_ITEM_OWNER(&(pxNewTCB->xEventListItem), pxNewTCB);

#if (portCRITICAL_NESTING_IN_TCB == 1)
    {
        pxNewTCB->uxCriticalNesting = (UBaseType_t)0U;
    }
#endif /* portCRITICAL_NESTING_IN_TCB */

#if (configUSE_APPLICATION_TASK_TAG == 1)
    {
        pxNewTCB->pxTaskTag = NULL;
    }
#endif /* configUSE_APPLICATION_TASK_TAG */

#if (configGENERATE_RUN_TIME_STATS == 1)
    {
        pxNewTCB->ulRunTimeCounter = 0UL;
    }
#endif /* configGENERATE_RUN_TIME_STATS */

#if (portUSING_MPU_WRAPPERS == 1)
    {
        vPortStoreTaskMPUSettings(
            &(pxNewTCB->xMPUSettings),
            xRegions,
            pxNewTCB->pxStack,
            ulStackDepth);
    }
#else
    {
        /* Avoid compiler warning about unreferenced parameter. */
        (void)xRegions;
    }
#endif

#if (configNUM_THREAD_LOCAL_STORAGE_POINTERS != 0)
    {
        for (x = 0; x < (UBaseType_t)configNUM_THREAD_LOCAL_STORAGE_POINTERS;
             x++) {
            pxNewTCB->pvThreadLocalStoragePointers[x] = NULL;
        }
    }
#endif

#if (configUSE_TASK_NOTIFICATIONS == 1)
    {
        pxNewTCB->ulNotifiedValue = 0;
        pxNewTCB->ucNotifyState = taskNOT_WAITING_NOTIFICATION;
    }
#endif

#if (configUSE_NEWLIB_REENTRANT == 1)
    {
        /* Initialise this task's Newlib reent structure.
        See the third party link
        http://www.nadler.com/embedded/newlibAndFreeRTOS.html for additional
        information. */
        _REENT_INIT_PTR((&(pxNewTCB->xNewLib_reent)));
    }
#endif

#if (INCLUDE_xTaskAbortDelay == 1)
    {
        pxNewTCB->ucDelayAborted = pdFALSE;
    }
#endif

/* Initialize the TCB stack to look as if the task was already running,
but had been interrupted by the scheduler.  The return address is set
to the start of the task function. Once the stack has been initialised
the top of stack variable is updated. */
#if (portUSING_MPU_WRAPPERS == 1)
    {
/* If the port has capability to detect stack overflow,
pass the stack end address to the stack initialization
function as well. */
#    if (portHAS_STACK_OVERFLOW_CHECKING == 1)
        {
#        if (portSTACK_GROWTH < 0)
            {
                pxNewTCB->pxTopOfStack = pxPortInitialiseStack(
                    pxTopOfStack,
                    pxNewTCB->pxStack,
                    pxTaskCode,
                    pvParameters,
                    xRunPrivileged);
            }
#        else /* portSTACK_GROWTH */
            {
                pxNewTCB->pxTopOfStack = pxPortInitialiseStack(
                    pxTopOfStack,
                    pxNewTCB->pxEndOfStack,
                    pxTaskCode,
                    pvParameters,
                    xRunPrivileged);
            }
#        endif /* portSTACK_GROWTH */
        }
#    else /* portHAS_STACK_OVERFLOW_CHECKING */
        {
            pxNewTCB->pxTopOfStack = pxPortInitialiseStack(
                pxTopOfStack, pxTaskCode, pvParameters, xRunPrivileged);
        }
#    endif /* portHAS_STACK_OVERFLOW_CHECKING */
    }
#else /* portUSING_MPU_WRAPPERS */
    {
/* If the port has capability to detect stack overflow,
pass the stack end address to the stack initialization
function as well. */
#    if (portHAS_STACK_OVERFLOW_CHECKING == 1)
        {
#        if (portSTACK_GROWTH < 0)
            {
                pxNewTCB->pxTopOfStack = pxPortInitialiseStack(
                    pxTopOfStack, pxNewTCB->pxStack, pxTaskCode, pvParameters);
            }
#        else /* portSTACK_GROWTH */
            {
                pxNewTCB->pxTopOfStack = pxPortInitialiseStack(
                    pxTopOfStack,
                    pxNewTCB->pxEndOfStack,
                    pxTaskCode,
                    pvParameters);
            }
#        endif /* portSTACK_GROWTH */
        }
#    else /* portHAS_STACK_OVERFLOW_CHECKING */
        {
            pxNewTCB->pxTopOfStack =
                pxPortInitialiseStack(pxTopOfStack, pxTaskCode, pvParameters);
        }
#    endif /* portHAS_STACK_OVERFLOW_CHECKING */
    }
#endif /* portUSING_MPU_WRAPPERS */

    if (pxCreatedTask != NULL) {
        /* Pass the handle out in an anonymous way.  The handle can be used to
        change the created task's priority, delete the created task, etc.*/
        *pxCreatedTask = (TaskHandle_t)pxNewTCB;
    } else {
        mtCOVERAGE_TEST_MARKER();
    }
}
/*-----------------------------------------------------------*/

static void prvAddNewTaskToReadyList(TCB_t *pxNewTCB)
{
    /* Ensure interrupts don't access the task lists while the lists are being
    updated. */
    taskENTER_CRITICAL();
    {
        uxCurrentNumberOfTasks++;
        if (pxCurrentTCB == NULL) {
            /* There are no other tasks, or all the other tasks are in
            the suspended state - make this the current task. */
            pxCurrentTCB = pxNewTCB;

            if (uxCurrentNumberOfTasks == (UBaseType_t)1) {
                /* This is the first task to be created so do the preliminary
                initialisation required.  We will not recover if this call
                fails, but we will report the failure. */
                prvInitialiseTaskLists();
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
        } else {
            /* If the scheduler is not already running, make this task the
            current task if it is the highest priority task to be created
            so far. */
            if (xSchedulerRunning == pdFALSE) {
                if (pxCurrentTCB->uxPriority <= pxNewTCB->uxPriority) {
                    pxCurrentTCB = pxNewTCB;
                } else {
                    mtCOVERAGE_TEST_MARKER();
                }
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
        }

        uxTaskNumber++;

#if (configUSE_TRACE_FACILITY == 1)
        {
            /* Add a counter into the TCB for tracing only. */
            pxNewTCB->uxTCBNumber = uxTaskNumber;
        }
#endif /* configUSE_TRACE_FACILITY */
        traceTASK_CREATE(pxNewTCB);

        prvAddTaskToReadyList(pxNewTCB);

        portSETUP_TCB(pxNewTCB);
    }
    taskEXIT_CRITICAL();

    if (xSchedulerRunning != pdFALSE) {
        /* If the created task is of a higher priority than the current task
        then it should run now. */
        if (pxCurrentTCB->uxPriority < pxNewTCB->uxPriority) {
            taskYIELD_IF_USING_PREEMPTION();
        } else {
            mtCOVERAGE_TEST_MARKER();
        }
    } else {
        mtCOVERAGE_TEST_MARKER();
    }
}
/*-----------------------------------------------------------*/

#if (INCLUDE_vTaskDelete == 1)

void vTaskDelete(TaskHandle_t xTaskToDelete)
{
    TCB_t *pxTCB;

    taskENTER_CRITICAL();
    {
        /* If null is passed in here then it is the calling task that is
        being deleted. */
        pxTCB = prvGetTCBFromHandle(xTaskToDelete);

        /* Remove task from the ready/delayed list. */
        if (uxListRemove(&(pxTCB->xStateListItem)) == (UBaseType_t)0) {
            taskRESET_READY_PRIORITY(pxTCB->uxPriority);
        } else {
            mtCOVERAGE_TEST_MARKER();
        }

        /* Is the task waiting on an event also? */
        if (listLIST_ITEM_CONTAINER(&(pxTCB->xEventListItem)) != NULL) {
            (void)uxListRemove(&(pxTCB->xEventListItem));
        } else {
            mtCOVERAGE_TEST_MARKER();
        }

        /* Increment the uxTaskNumber also so kernel aware debuggers can
        detect that the task lists need re-generating.  This is done before
        portPRE_TASK_DELETE_HOOK() as in the Windows port that macro will
        not return. */
        uxTaskNumber++;

        if (pxTCB == pxCurrentTCB) {
            /* A task is deleting itself.  This cannot complete within the
            task itself, as a context switch to another task is required.
            Place the task in the termination list.  The idle task will
            check the termination list and free up any memory allocated by
            the scheduler for the TCB and stack of the deleted task. */
            vListInsertEnd(&xTasksWaitingTermination, &(pxTCB->xStateListItem));

            /* Increment the ucTasksDeleted variable so the idle task knows
            there is a task that has been deleted and that it should therefore
            check the xTasksWaitingTermination list. */
            ++uxDeletedTasksWaitingCleanUp;

            /* Call the delete hook before portPRE_TASK_DELETE_HOOK() as
            portPRE_TASK_DELETE_HOOK() does not return in the Win32 port. */
            traceTASK_DELETE(pxTCB);

            /* The pre-delete hook is primarily for the Windows simulator,
            in which Windows specific clean up operations are performed,
            after which it is not possible to yield away from this task -
            hence xYieldPending is used to latch that a context switch is
            required. */
            portPRE_TASK_DELETE_HOOK(pxTCB, &xYieldPending);
        } else {
            --uxCurrentNumberOfTasks;
            traceTASK_DELETE(pxTCB);
            prvDeleteTCB(pxTCB);

            /* Reset the next expected unblock time in case it referred to
            the task that has just been deleted. */
            prvResetNextTaskUnblockTime();
        }
    }
    taskEXIT_CRITICAL();

    /* Force a reschedule if it is the currently running task that has just
    been deleted. */
    if (xSchedulerRunning != pdFALSE) {
        if (pxTCB == pxCurrentTCB) {
            configASSERT(uxSchedulerSuspended == 0);
            portYIELD_WITHIN_API();
        } else {
            mtCOVERAGE_TEST_MARKER();
        }
    }
}

#endif /* INCLUDE_vTaskDelete */
/*-----------------------------------------------------------*/

#if (INCLUDE_vTaskDelayUntil == 1)

void vTaskDelayUntil(
    TickType_t *const pxPreviousWakeTime,
    const TickType_t xTimeIncrement)
{
    TickType_t xTimeToWake;
    BaseType_t xAlreadyYielded, xShouldDelay = pdFALSE;

    configASSERT(pxPreviousWakeTime);
    configASSERT((xTimeIncrement > 0U));
    configASSERT(uxSchedulerSuspended == 0);

    vTaskSuspendAll();
    {
        /* Minor optimisation.  The tick count cannot change in this
        block. */
        const TickType_t xConstTickCount = xTickCount;

        /* Generate the tick time at which the task wants to wake. */
        xTimeToWake = *pxPreviousWakeTime + xTimeIncrement;

        if (xConstTickCount < *pxPreviousWakeTime) {
            /* The tick count has overflowed since this function was
            lasted called.  In this case the only time we should ever
            actually delay is if the wake time has also	overflowed,
            and the wake time is greater than the tick time.  When this
            is the case it is as if neither time had overflowed. */
            if ((xTimeToWake < *pxPreviousWakeTime) &&
                (xTimeToWake > xConstTickCount)) {
                xShouldDelay = pdTRUE;
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
        } else {
            /* The tick time has not overflowed.  In this case we will
            delay if either the wake time has overflowed, and/or the
            tick time is less than the wake time. */
            if ((xTimeToWake < *pxPreviousWakeTime) ||
                (xTimeToWake > xConstTickCount)) {
                xShouldDelay = pdTRUE;
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
        }

        /* Update the wake time ready for the next call. */
        *pxPreviousWakeTime = xTimeToWake;

        if (xShouldDelay != pdFALSE) {
            traceTASK_DELAY_UNTIL(xTimeToWake);

            /* prvAddCurrentTaskToDelayedList() needs the block time, not
            the time to wake, so subtract the current tick count. */
            prvAddCurrentTaskToDelayedList(
                xTimeToWake - xConstTickCount, pdFALSE);
        } else {
            mtCOVERAGE_TEST_MARKER();
        }
    }
    xAlreadyYielded = xTaskResumeAll();

    /* Force a reschedule if xTaskResumeAll has not already done so, we may
    have put ourselves to sleep. */
    if (xAlreadyYielded == pdFALSE) {
        portYIELD_WITHIN_API();
    } else {
        mtCOVERAGE_TEST_MARKER();
    }
}

#endif /* INCLUDE_vTaskDelayUntil */
/*-----------------------------------------------------------*/

#if (INCLUDE_vTaskDelay == 1)

void vTaskDelay(const TickType_t xTicksToDelay)
{
    BaseType_t xAlreadyYielded = pdFALSE;

    /* A delay time of zero just forces a reschedule. */
    if (xTicksToDelay > (TickType_t)0U) {
        configASSERT(uxSchedulerSuspended == 0);
        vTaskSuspendAll();
        {
            traceTASK_DELAY();

            /* A task that is removed from the event list while the
            scheduler is suspended will not get placed in the ready
            list or removed from the blocked list until the scheduler
            is resumed.

            This task cannot be in an event list as it is the currently
            executing task. */
            prvAddCurrentTaskToDelayedList(xTicksToDelay, pdFALSE);
        }
        xAlreadyYielded = xTaskResumeAll();
    } else {
        mtCOVERAGE_TEST_MARKER();
    }

    /* Force a reschedule if xTaskResumeAll has not already done so, we may
    have put ourselves to sleep. */
    if (xAlreadyYielded == pdFALSE) {
        portYIELD_WITHIN_API();
    } else {
        mtCOVERAGE_TEST_MARKER();
    }
}

#endif /* INCLUDE_vTaskDelay */
/*-----------------------------------------------------------*/

#if ( \
    (INCLUDE_eTaskGetState == 1) || (configUSE_TRACE_FACILITY == 1) || \
    (INCLUDE_xTaskAbortDelay == 1))

eTaskState eTaskGetState(TaskHandle_t xTask)
{
    eTaskState eReturn;
    List_t const *pxStateList, *pxDelayedList, *pxOverflowedDelayedList;
    const TCB_t *const pxTCB = xTask;

    configASSERT(pxTCB);

    if (pxTCB == pxCurrentTCB) {
        /* The task calling this function is querying its own state. */
        eReturn = eRunning;
    } else {
        taskENTER_CRITICAL();
        {
            pxStateList = listLIST_ITEM_CONTAINER(&(pxTCB->xStateListItem));
            pxDelayedList = pxDelayedTaskList;
            pxOverflowedDelayedList = pxOverflowDelayedTaskList;
        }
        taskEXIT_CRITICAL();

        if ((pxStateList == pxDelayedList) ||
            (pxStateList == pxOverflowedDelayedList)) {
            /* The task being queried is referenced from one of the Blocked
            lists. */
            eReturn = eBlocked;
        }
#    if (INCLUDE_vTaskSuspend == 1)
        else if (pxStateList == &xSuspendedTaskList) {
            /* The task being queried is referenced from the suspended
            list.  Is it genuinely suspended or is it blocked
            indefinitely? */
            if (listLIST_ITEM_CONTAINER(&(pxTCB->xEventListItem)) == NULL) {
#        if (configUSE_TASK_NOTIFICATIONS == 1)
                {
                    /* The task does not appear on the event list item of
                    and of the RTOS objects, but could still be in the
                    blocked state if it is waiting on its notification
                    rather than waiting on an object. */
                    if (pxTCB->ucNotifyState == taskWAITING_NOTIFICATION) {
                        eReturn = eBlocked;
                    } else {
                        eReturn = eSuspended;
                    }
                }
#        else
                {
                    eReturn = eSuspended;
                }
#        endif
            } else {
                eReturn = eBlocked;
            }
        }
#    endif

#    if (INCLUDE_vTaskDelete == 1)
        else if (
            (pxStateList == &xTasksWaitingTermination) ||
            (pxStateList == NULL)) {
            /* The task being queried is referenced from the deleted
            tasks list, or it is not referenced from any lists at
            all. */
            eReturn = eDeleted;
        }
#    endif

        else /*lint !e525 Negative indentation is intended to make use of
                pre-processor clearer. */
        {
            /* If the task is not in any other state, it must be in the
            Ready (including pending ready) state. */
            eReturn = eReady;
        }
    }

    return eReturn;
} /*lint !e818 xTask cannot be a pointer to const because it is a typedef. */

#endif /* INCLUDE_eTaskGetState */
/*-----------------------------------------------------------*/

#if (INCLUDE_uxTaskPriorityGet == 1)

UBaseType_t uxTaskPriorityGet(const TaskHandle_t xTask)
{
    TCB_t const *pxTCB;
    UBaseType_t uxReturn;

    taskENTER_CRITICAL();
    {
        /* If null is passed in here then it is the priority of the task
        that called uxTaskPriorityGet() that is being queried. */
        pxTCB = prvGetTCBFromHandle(xTask);
        uxReturn = pxTCB->uxPriority;
    }
    taskEXIT_CRITICAL();

    return uxReturn;
}

#endif /* INCLUDE_uxTaskPriorityGet */
/*-----------------------------------------------------------*/

#if (INCLUDE_uxTaskPriorityGet == 1)

UBaseType_t uxTaskPriorityGetFromISR(const TaskHandle_t xTask)
{
    TCB_t const *pxTCB;
    UBaseType_t uxReturn, uxSavedInterruptState;

    /* RTOS ports that support interrupt nesting have the concept of a
    maximum	system call (or maximum API call) interrupt priority.
    Interrupts that are	above the maximum system call priority are keep
    permanently enabled, even when the RTOS kernel is in a critical section,
    but cannot make any calls to FreeRTOS API functions.  If configASSERT()
    is defined in FreeRTOSConfig.h then
    portASSERT_IF_INTERRUPT_PRIORITY_INVALID() will result in an assertion
    failure if a FreeRTOS API function is called from an interrupt that has
    been assigned a priority above the configured maximum system call
    priority.  Only FreeRTOS functions that end in FromISR can be called
    from interrupts	that have been assigned a priority at or (logically)
    below the maximum system call interrupt priority.  FreeRTOS maintains a
    separate interrupt safe API to ensure interrupt entry is as fast and as
    simple as possible.  More information (albeit Cortex-M specific) is
    provided on the following link:
    https://www.freertos.org/RTOS-Cortex-M3-M4.html */
    portASSERT_IF_INTERRUPT_PRIORITY_INVALID();

    uxSavedInterruptState = portSET_INTERRUPT_MASK_FROM_ISR();
    {
        /* If null is passed in here then it is the priority of the calling
        task that is being queried. */
        pxTCB = prvGetTCBFromHandle(xTask);
        uxReturn = pxTCB->uxPriority;
    }
    portCLEAR_INTERRUPT_MASK_FROM_ISR(uxSavedInterruptState);

    return uxReturn;
}

#endif /* INCLUDE_uxTaskPriorityGet */
/*-----------------------------------------------------------*/

#if (INCLUDE_vTaskPrioritySet == 1)

void vTaskPrioritySet(TaskHandle_t xTask, UBaseType_t uxNewPriority)
{
    TCB_t *pxTCB;
    UBaseType_t uxCurrentBasePriority, uxPriorityUsedOnEntry;
    BaseType_t xYieldRequired = pdFALSE;

    configASSERT((uxNewPriority < configMAX_PRIORITIES));

    /* Ensure the new priority is valid. */
    if (uxNewPriority >= (UBaseType_t)configMAX_PRIORITIES) {
        uxNewPriority = (UBaseType_t)configMAX_PRIORITIES - (UBaseType_t)1U;
    } else {
        mtCOVERAGE_TEST_MARKER();
    }

    taskENTER_CRITICAL();
    {
        /* If null is passed in here then it is the priority of the calling
        task that is being changed. */
        pxTCB = prvGetTCBFromHandle(xTask);

        traceTASK_PRIORITY_SET(pxTCB, uxNewPriority);

#    if (configUSE_MUTEXES == 1)
        {
            uxCurrentBasePriority = pxTCB->uxBasePriority;
        }
#    else
        {
            uxCurrentBasePriority = pxTCB->uxPriority;
        }
#    endif

        if (uxCurrentBasePriority != uxNewPriority) {
            /* The priority change may have readied a task of higher
            priority than the calling task. */
            if (uxNewPriority > uxCurrentBasePriority) {
                if (pxTCB != pxCurrentTCB) {
                    /* The priority of a task other than the currently
                    running task is being raised.  Is the priority being
                    raised above that of the running task? */
                    if (uxNewPriority >= pxCurrentTCB->uxPriority) {
                        xYieldRequired = pdTRUE;
                    } else {
                        mtCOVERAGE_TEST_MARKER();
                    }
                } else {
                    /* The priority of the running task is being raised,
                    but the running task must already be the highest
                    priority task able to run so no yield is required. */
                }
            } else if (pxTCB == pxCurrentTCB) {
                /* Setting the priority of the running task down means
                there may now be another task of higher priority that
                is ready to execute. */
                xYieldRequired = pdTRUE;
            } else {
                /* Setting the priority of any other task down does not
                require a yield as the running task must be above the
                new priority of the task being modified. */
            }

            /* Remember the ready list the task might be referenced from
            before its uxPriority member is changed so the
            taskRESET_READY_PRIORITY() macro can function correctly. */
            uxPriorityUsedOnEntry = pxTCB->uxPriority;

#    if (configUSE_MUTEXES == 1)
            {
                /* Only change the priority being used if the task is not
                currently using an inherited priority. */
                if (pxTCB->uxBasePriority == pxTCB->uxPriority) {
                    pxTCB->uxPriority = uxNewPriority;
                } else {
                    mtCOVERAGE_TEST_MARKER();
                }

                /* The base priority gets set whatever. */
                pxTCB->uxBasePriority = uxNewPriority;
            }
#    else
            {
                pxTCB->uxPriority = uxNewPriority;
            }
#    endif

            /* Only reset the event list item value if the value is not
            being used for anything else. */
            if ((listGET_LIST_ITEM_VALUE(&(pxTCB->xEventListItem)) &
                 taskEVENT_LIST_ITEM_VALUE_IN_USE) == 0UL) {
                listSET_LIST_ITEM_VALUE(
                    &(pxTCB->xEventListItem),
                    ((TickType_t)configMAX_PRIORITIES -
                     (TickType_t)
                         uxNewPriority)); /*lint !e961 MISRA exception as the
                                             casts are only redundant for some
                                             ports. */
            } else {
                mtCOVERAGE_TEST_MARKER();
            }

            /* If the task is in the blocked or suspended list we need do
            nothing more than change its priority variable. However, if
            the task is in a ready list it needs to be removed and placed
            in the list appropriate to its new priority. */
            if (listIS_CONTAINED_WITHIN(
                    &(pxReadyTasksLists[uxPriorityUsedOnEntry]),
                    &(pxTCB->xStateListItem)) != pdFALSE) {
                /* The task is currently in its ready list - remove before
                adding it to it's new ready list.  As we are in a critical
                section we can do this even if the scheduler is suspended. */
                if (uxListRemove(&(pxTCB->xStateListItem)) == (UBaseType_t)0) {
                    /* It is known that the task is in its ready list so
                    there is no need to check again and the port level
                    reset macro can be called directly. */
                    portRESET_READY_PRIORITY(
                        uxPriorityUsedOnEntry, uxTopReadyPriority);
                } else {
                    mtCOVERAGE_TEST_MARKER();
                }
                prvAddTaskToReadyList(pxTCB);
            } else {
                mtCOVERAGE_TEST_MARKER();
            }

            if (xYieldRequired != pdFALSE) {
                taskYIELD_IF_USING_PREEMPTION();
            } else {
                mtCOVERAGE_TEST_MARKER();
            }

            /* Remove compiler warning about unused variables when the port
            optimised task selection is not being used. */
            (void)uxPriorityUsedOnEntry;
        }
    }
    taskEXIT_CRITICAL();
}

#endif /* INCLUDE_vTaskPrioritySet */
/*-----------------------------------------------------------*/

#if (INCLUDE_vTaskSuspend == 1)

void vTaskSuspend(TaskHandle_t xTaskToSuspend)
{
    TCB_t *pxTCB;

    taskENTER_CRITICAL();
    {
        /* If null is passed in here then it is the running task that is
        being suspended. */
        pxTCB = prvGetTCBFromHandle(xTaskToSuspend);

        traceTASK_SUSPEND(pxTCB);

        /* Remove task from the ready/delayed list and place in the
        suspended list. */
        if (uxListRemove(&(pxTCB->xStateListItem)) == (UBaseType_t)0) {
            taskRESET_READY_PRIORITY(pxTCB->uxPriority);
        } else {
            mtCOVERAGE_TEST_MARKER();
        }

        /* Is the task waiting on an event also? */
        if (listLIST_ITEM_CONTAINER(&(pxTCB->xEventListItem)) != NULL) {
            (void)uxListRemove(&(pxTCB->xEventListItem));
        } else {
            mtCOVERAGE_TEST_MARKER();
        }

        vListInsertEnd(&xSuspendedTaskList, &(pxTCB->xStateListItem));

#    if (configUSE_TASK_NOTIFICATIONS == 1)
        {
            if (pxTCB->ucNotifyState == taskWAITING_NOTIFICATION) {
                /* The task was blocked to wait for a notification, but is
                now suspended, so no notification was received. */
                pxTCB->ucNotifyState = taskNOT_WAITING_NOTIFICATION;
            }
        }
#    endif
    }
    taskEXIT_CRITICAL();

    if (xSchedulerRunning != pdFALSE) {
        /* Reset the next expected unblock time in case it referred to the
        task that is now in the Suspended state. */
        taskENTER_CRITICAL();
        {
            prvResetNextTaskUnblockTime();
        }
        taskEXIT_CRITICAL();
    } else {
        mtCOVERAGE_TEST_MARKER();
    }

    if (pxTCB == pxCurrentTCB) {
        if (xSchedulerRunning != pdFALSE) {
            /* The current task has just been suspended. */
            configASSERT(uxSchedulerSuspended == 0);
            portYIELD_WITHIN_API();
        } else {
            /* The scheduler is not running, but the task that was pointed
            to by pxCurrentTCB has just been suspended and pxCurrentTCB
            must be adjusted to point to a different task. */
            if (listCURRENT_LIST_LENGTH(&xSuspendedTaskList) ==
                uxCurrentNumberOfTasks) /*lint !e931 Right has no side effect,
                                           just volatile. */
            {
                /* No other tasks are ready, so set pxCurrentTCB back to
                NULL so when the next task is created pxCurrentTCB will
                be set to point to it no matter what its relative priority
                is. */
                pxCurrentTCB = NULL;
            } else {
                vTaskSwitchContext();
            }
        }
    } else {
        mtCOVERAGE_TEST_MARKER();
    }
}

#endif /* INCLUDE_vTaskSuspend */
/*-----------------------------------------------------------*/

#if (INCLUDE_vTaskSuspend == 1)

static BaseType_t prvTaskIsTaskSuspended(const TaskHandle_t xTask)
{
    BaseType_t xReturn = pdFALSE;
    const TCB_t *const pxTCB = xTask;

    /* Accesses xPendingReadyList so must be called from a critical
    section. */

    /* It does not make sense to check if the calling task is suspended. */
    configASSERT(xTask);

    /* Is the task being resumed actually in the suspended list? */
    if (listIS_CONTAINED_WITHIN(
            &xSuspendedTaskList, &(pxTCB->xStateListItem)) != pdFALSE) {
        /* Has the task already been resumed from within an ISR? */
        if (listIS_CONTAINED_WITHIN(
                &xPendingReadyList, &(pxTCB->xEventListItem)) == pdFALSE) {
            /* Is it in the suspended list because it is in the	Suspended
            state, or because is is blocked with no timeout? */
            if (listIS_CONTAINED_WITHIN(NULL, &(pxTCB->xEventListItem)) !=
                pdFALSE) /*lint !e961.  The cast is only redundant when NULL is
                            used. */
            {
                xReturn = pdTRUE;
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
        } else {
            mtCOVERAGE_TEST_MARKER();
        }
    } else {
        mtCOVERAGE_TEST_MARKER();
    }

    return xReturn;
} /*lint !e818 xTask cannot be a pointer to const because it is a typedef. */

#endif /* INCLUDE_vTaskSuspend */
/*-----------------------------------------------------------*/

#if (INCLUDE_vTaskSuspend == 1)

void vTaskResume(TaskHandle_t xTaskToResume)
{
    TCB_t *const pxTCB = xTaskToResume;

    /* It does not make sense to resume the calling task. */
    configASSERT(xTaskToResume);

    /* The parameter cannot be NULL as it is impossible to resume the
    currently executing task. */
    if ((pxTCB != pxCurrentTCB) && (pxTCB != NULL)) {
        taskENTER_CRITICAL();
        {
            if (prvTaskIsTaskSuspended(pxTCB) != pdFALSE) {
                traceTASK_RESUME(pxTCB);

                /* The ready list can be accessed even if the scheduler is
                suspended because this is inside a critical section. */
                (void)uxListRemove(&(pxTCB->xStateListItem));
                prvAddTaskToReadyList(pxTCB);

                /* A higher priority task may have just been resumed. */
                if (pxTCB->uxPriority >= pxCurrentTCB->uxPriority) {
                    /* This yield may not cause the task just resumed to run,
                    but will leave the lists in the correct state for the
                    next yield. */
                    taskYIELD_IF_USING_PREEMPTION();
                } else {
                    mtCOVERAGE_TEST_MARKER();
                }
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
        }
        taskEXIT_CRITICAL();
    } else {
        mtCOVERAGE_TEST_MARKER();
    }
}

#endif /* INCLUDE_vTaskSuspend */

/*-----------------------------------------------------------*/

#if ((INCLUDE_xTaskResumeFromISR == 1) && (INCLUDE_vTaskSuspend == 1))

BaseType_t xTaskResumeFromISR(TaskHandle_t xTaskToResume)
{
    BaseType_t xYieldRequired = pdFALSE;
    TCB_t *const pxTCB = xTaskToResume;
    UBaseType_t uxSavedInterruptStatus;

    configASSERT(xTaskToResume);

    /* RTOS ports that support interrupt nesting have the concept of a
    maximum	system call (or maximum API call) interrupt priority.
    Interrupts that are	above the maximum system call priority are keep
    permanently enabled, even when the RTOS kernel is in a critical section,
    but cannot make any calls to FreeRTOS API functions.  If configASSERT()
    is defined in FreeRTOSConfig.h then
    portASSERT_IF_INTERRUPT_PRIORITY_INVALID() will result in an assertion
    failure if a FreeRTOS API function is called from an interrupt that has
    been assigned a priority above the configured maximum system call
    priority.  Only FreeRTOS functions that end in FromISR can be called
    from interrupts	that have been assigned a priority at or (logically)
    below the maximum system call interrupt priority.  FreeRTOS maintains a
    separate interrupt safe API to ensure interrupt entry is as fast and as
    simple as possible.  More information (albeit Cortex-M specific) is
    provided on the following link:
    https://www.freertos.org/RTOS-Cortex-M3-M4.html */
    portASSERT_IF_INTERRUPT_PRIORITY_INVALID();

    uxSavedInterruptStatus = portSET_INTERRUPT_MASK_FROM_ISR();
    {
        if (prvTaskIsTaskSuspended(pxTCB) != pdFALSE) {
            traceTASK_RESUME_FROM_ISR(pxTCB);

            /* Check the ready lists can be accessed. */
            if (uxSchedulerSuspended == (UBaseType_t)pdFALSE) {
                /* Ready lists can be accessed so move the task from the
                suspended list to the ready list directly. */
                if (pxTCB->uxPriority >= pxCurrentTCB->uxPriority) {
                    xYieldRequired = pdTRUE;
                } else {
                    mtCOVERAGE_TEST_MARKER();
                }

                (void)uxListRemove(&(pxTCB->xStateListItem));
                prvAddTaskToReadyList(pxTCB);
            } else {
                /* The delayed or ready lists cannot be accessed so the task
                is held in the pending ready list until the scheduler is
                unsuspended. */
                vListInsertEnd(&(xPendingReadyList), &(pxTCB->xEventListItem));
            }
        } else {
            mtCOVERAGE_TEST_MARKER();
        }
    }
    portCLEAR_INTERRUPT_MASK_FROM_ISR(uxSavedInterruptStatus);

    return xYieldRequired;
}

#endif /* ( ( INCLUDE_xTaskResumeFromISR == 1 ) && ( INCLUDE_vTaskSuspend == 1 \
          ) ) */
/*-----------------------------------------------------------*/

void vTaskStartScheduler(void)
{
    BaseType_t xReturn;

/* Add the idle task at the lowest priority. */
#if (configSUPPORT_STATIC_ALLOCATION == 1)
    {
        StaticTask_t *pxIdleTaskTCBBuffer = NULL;
        StackType_t *pxIdleTaskStackBuffer = NULL;
        uint32_t ulIdleTaskStackSize;

        /* The Idle task is created using user provided RAM - obtain the
        address of the RAM then create the idle task. */
        vApplicationGetIdleTaskMemory(
            &pxIdleTaskTCBBuffer, &pxIdleTaskStackBuffer, &ulIdleTaskStackSize);
        xIdleTaskHandle = xTaskCreateStatic(
            prvIdleTask,
            configIDLE_TASK_NAME,
            ulIdleTaskStackSize,
            (void *)NULL, /*lint !e961.  The cast is not redundant for all
                             compilers. */
            portPRIVILEGE_BIT, /* In effect ( tskIDLE_PRIORITY |
                                  portPRIVILEGE_BIT ), but tskIDLE_PRIORITY is
                                  zero. */
            pxIdleTaskStackBuffer,
            pxIdleTaskTCBBuffer); /*lint !e961 MISRA exception, justified as it
                                     is not a redundant explicit cast to all
                                     supported compilers. */

        if (xIdleTaskHandle != NULL) {
            xReturn = pdPASS;
        } else {
            xReturn = pdFAIL;
        }
    }
#else
    {
        /* The Idle task is being created using dynamically allocated RAM. */
        xReturn = xTaskCreate(
            prvIdleTask,
            configIDLE_TASK_NAME,
            configMINIMAL_STACK_SIZE,
            (void *)NULL,
            portPRIVILEGE_BIT, /* In effect ( tskIDLE_PRIORITY |
                                  portPRIVILEGE_BIT ), but tskIDLE_PRIORITY is
                                  zero. */
            &xIdleTaskHandle); /*lint !e961 MISRA exception, justified as it is
                                  not a redundant explicit cast to all supported
                                  compilers. */
    }
#endif /* configSUPPORT_STATIC_ALLOCATION */

#if (configUSE_TIMERS == 1)
    {
        if (xReturn == pdPASS) {
            xReturn = xTimerCreateTimerTask();
        } else {
            mtCOVERAGE_TEST_MARKER();
        }
    }
#endif /* configUSE_TIMERS */

    if (xReturn == pdPASS) {
/* freertos_tasks_c_additions_init() should only be called if the user
definable macro FREERTOS_TASKS_C_ADDITIONS_INIT() is defined, as that is
the only macro called by the function. */
#ifdef FREERTOS_TASKS_C_ADDITIONS_INIT
        {
            freertos_tasks_c_additions_init();
        }
#endif

        /* Interrupts are turned off here, to ensure a tick does not occur
        before or during the call to xPortStartScheduler().  The stacks of
        the created tasks contain a status word with interrupts switched on
        so interrupts will automatically get re-enabled when the first task
        starts to run. */
        portDISABLE_INTERRUPTS();

#if (configUSE_NEWLIB_REENTRANT == 1)
        {
            /* Switch Newlib's _impure_ptr variable to point to the _reent
            structure specific to the task that will run first.
            See the third party link
            http://www.nadler.com/embedded/newlibAndFreeRTOS.html
            for additional information. */
            _impure_ptr = &(pxCurrentTCB->xNewLib_reent);
        }
#endif /* configUSE_NEWLIB_REENTRANT */

        xNextTaskUnblockTime = portMAX_DELAY;
        xSchedulerRunning = pdTRUE;
        xTickCount = (TickType_t)configINITIAL_TICK_COUNT;

        /* If configGENERATE_RUN_TIME_STATS is defined then the following
        macro must be defined to configure the timer/counter used to generate
        the run time counter time base.   NOTE:  If
        configGENERATE_RUN_TIME_STATS is set to 0 and the following line fails
        to build then ensure you do not have
        portCONFIGURE_TIMER_FOR_RUN_TIME_STATS() defined in your
        FreeRTOSConfig.h file. */
        portCONFIGURE_TIMER_FOR_RUN_TIME_STATS();

        traceTASK_SWITCHED_IN();

        /* Setting up the timer tick is hardware specific and thus in the
        portable interface. */
        if (xPortStartScheduler() != pdFALSE) {
            /* Should not reach here as if the scheduler is running the
            function will not return. */
        } else {
            /* Should only reach here if a task calls xTaskEndScheduler(). */
        }
    } else {
        /* This line will only be reached if the kernel could not be started,
        because there was not enough FreeRTOS heap to create the idle task
        or the timer task. */
        configASSERT(xReturn != errCOULD_NOT_ALLOCATE_REQUIRED_MEMORY);
    }

    /* Prevent compiler warnings if INCLUDE_xTaskGetIdleTaskHandle is set to 0,
    meaning xIdleTaskHandle is not used anywhere else. */
    (void)xIdleTaskHandle;
}
/*-----------------------------------------------------------*/

void vTaskEndScheduler(void)
{
    /* Stop the scheduler interrupts and call the portable scheduler end
    routine so the original ISRs can be restored if necessary.  The port
    layer must ensure interrupts enable	bit is left in the correct state. */
    portDISABLE_INTERRUPTS();
    xSchedulerRunning = pdFALSE;
    vPortEndScheduler();
}
/*----------------------------------------------------------*/

void vTaskSuspendAll(void)
{
    /* A critical section is not required as the variable is of type
    BaseType_t.  Please read Richard Barry's reply in the following link to a
    post in the FreeRTOS support forum before reporting this as a bug! -
    http://goo.gl/wu4acr */

    /* portSOFRWARE_BARRIER() is only implemented for emulated/simulated ports
    that do not otherwise exhibit real time behaviour. */
    portSOFTWARE_BARRIER();

    /* The scheduler is suspended if uxSchedulerSuspended is non-zero.  An
    increment is used to allow calls to vTaskSuspendAll() to nest. */
    ++uxSchedulerSuspended;

    /* Enforces ordering for ports and optimised compilers that may otherwise
    place the above increment elsewhere. */
    portMEMORY_BARRIER();
}
/*----------------------------------------------------------*/

#if (configUSE_TICKLESS_IDLE != 0)

static TickType_t prvGetExpectedIdleTime(void)
{
    TickType_t xReturn;
    UBaseType_t uxHigherPriorityReadyTasks = pdFALSE;

/* uxHigherPriorityReadyTasks takes care of the case where
configUSE_PREEMPTION is 0, so there may be tasks above the idle priority
task that are in the Ready state, even though the idle task is
running. */
#    if (configUSE_PORT_OPTIMISED_TASK_SELECTION == 0)
    {
        if (uxTopReadyPriority > tskIDLE_PRIORITY) {
            uxHigherPriorityReadyTasks = pdTRUE;
        }
    }
#    else
    {
        const UBaseType_t uxLeastSignificantBit = (UBaseType_t)0x01;

        /* When port optimised task selection is used the uxTopReadyPriority
        variable is used as a bit map.  If bits other than the least
        significant bit are set then there are tasks that have a priority
        above the idle priority that are in the Ready state.  This takes
        care of the case where the co-operative scheduler is in use. */
        if (uxTopReadyPriority > uxLeastSignificantBit) {
            uxHigherPriorityReadyTasks = pdTRUE;
        }
    }
#    endif

    if (pxCurrentTCB->uxPriority > tskIDLE_PRIORITY) {
        xReturn = 0;
    } else if (
        listCURRENT_LIST_LENGTH(&(pxReadyTasksLists[tskIDLE_PRIORITY])) > 1) {
        /* There are other idle priority tasks in the ready state.  If
        time slicing is used then the very next tick interrupt must be
        processed. */
        xReturn = 0;
    } else if (uxHigherPriorityReadyTasks != pdFALSE) {
        /* There are tasks in the Ready state that have a priority above the
        idle priority.  This path can only be reached if
        configUSE_PREEMPTION is 0. */
        xReturn = 0;
    } else {
        xReturn = xNextTaskUnblockTime - xTickCount;
    }

    return xReturn;
}

#endif /* configUSE_TICKLESS_IDLE */
/*----------------------------------------------------------*/

BaseType_t xTaskResumeAll(void)
{
    TCB_t *pxTCB = NULL;
    BaseType_t xAlreadyYielded = pdFALSE;

    /* If uxSchedulerSuspended is zero then this function does not match a
    previous call to vTaskSuspendAll(). */
    configASSERT(uxSchedulerSuspended);

    /* It is possible that an ISR caused a task to be removed from an event
    list while the scheduler was suspended.  If this was the case then the
    removed task will have been added to the xPendingReadyList.  Once the
    scheduler has been resumed it is safe to move all the pending ready
    tasks from this list into their appropriate ready list. */
    taskENTER_CRITICAL();
    {
        --uxSchedulerSuspended;

        if (uxSchedulerSuspended == (UBaseType_t)pdFALSE) {
            if (uxCurrentNumberOfTasks > (UBaseType_t)0U) {
                /* Move any readied tasks from the pending list into the
                appropriate ready list. */
                while (listLIST_IS_EMPTY(&xPendingReadyList) == pdFALSE) {
                    pxTCB = listGET_OWNER_OF_HEAD_ENTRY(
                        (&xPendingReadyList)); /*lint !e9079 void * is used as
                                                  this macro is used with timers
                                                  and co-routines too. Alignment
                                                  is known to be fine as the
                                                  type of the pointer stored and
                                                  retrieved is the same. */
                    (void)uxListRemove(&(pxTCB->xEventListItem));
                    (void)uxListRemove(&(pxTCB->xStateListItem));
                    prvAddTaskToReadyList(pxTCB);

                    /* If the moved task has a priority higher than the current
                    task then a yield must be performed. */
                    if (pxTCB->uxPriority >= pxCurrentTCB->uxPriority) {
                        xYieldPending = pdTRUE;
                    } else {
                        mtCOVERAGE_TEST_MARKER();
                    }
                }

                if (pxTCB != NULL) {
                    /* A task was unblocked while the scheduler was suspended,
                    which may have prevented the next unblock time from being
                    re-calculated, in which case re-calculate it now.  Mainly
                    important for low power tickless implementations, where
                    this can prevent an unnecessary exit from low power
                    state. */
                    prvResetNextTaskUnblockTime();
                }

                /* If any ticks occurred while the scheduler was suspended then
                they should be processed now.  This ensures the tick count does
                not	slip, and that any delayed tasks are resumed at the correct
                time. */
                {
                    TickType_t xPendedCounts =
                        xPendedTicks; /* Non-volatile copy. */

                    if (xPendedCounts > (TickType_t)0U) {
                        do {
                            if (xTaskIncrementTick() != pdFALSE) {
                                xYieldPending = pdTRUE;
                            } else {
                                mtCOVERAGE_TEST_MARKER();
                            }
                            --xPendedCounts;
                        } while (xPendedCounts > (TickType_t)0U);

                        xPendedTicks = 0;
                    } else {
                        mtCOVERAGE_TEST_MARKER();
                    }
                }

                if (xYieldPending != pdFALSE) {
#if (configUSE_PREEMPTION != 0)
                    {
                        xAlreadyYielded = pdTRUE;
                    }
#endif
                    taskYIELD_IF_USING_PREEMPTION();
                } else {
                    mtCOVERAGE_TEST_MARKER();
                }
            }
        } else {
            mtCOVERAGE_TEST_MARKER();
        }
    }
    taskEXIT_CRITICAL();

    return xAlreadyYielded;
}
/*-----------------------------------------------------------*/

TickType_t xTaskGetTickCount(void)
{
    TickType_t xTicks;

    /* Critical section required if running on a 16 bit processor. */
    portTICK_TYPE_ENTER_CRITICAL();
    {
        xTicks = xTickCount;
    }
    portTICK_TYPE_EXIT_CRITICAL();

    return xTicks;
}
/*-----------------------------------------------------------*/

TickType_t xTaskGetTickCountFromISR(void)
{
    TickType_t xReturn;
    UBaseType_t uxSavedInterruptStatus;

    /* RTOS ports that support interrupt nesting have the concept of a maximum
    system call (or maximum API call) interrupt priority.  Interrupts that are
    above the maximum system call priority are kept permanently enabled, even
    when the RTOS kernel is in a critical section, but cannot make any calls to
    FreeRTOS API functions.  If configASSERT() is defined in FreeRTOSConfig.h
    then portASSERT_IF_INTERRUPT_PRIORITY_INVALID() will result in an assertion
    failure if a FreeRTOS API function is called from an interrupt that has been
    assigned a priority above the configured maximum system call priority.
    Only FreeRTOS functions that end in FromISR can be called from interrupts
    that have been assigned a priority at or (logically) below the maximum
    system call	interrupt priority.  FreeRTOS maintains a separate interrupt
    safe API to ensure interrupt entry is as fast and as simple as possible.
    More information (albeit Cortex-M specific) is provided on the following
    link: https://www.freertos.org/RTOS-Cortex-M3-M4.html */
    portASSERT_IF_INTERRUPT_PRIORITY_INVALID();

    uxSavedInterruptStatus = portTICK_TYPE_SET_INTERRUPT_MASK_FROM_ISR();
    {
        xReturn = xTickCount;
    }
    portTICK_TYPE_CLEAR_INTERRUPT_MASK_FROM_ISR(uxSavedInterruptStatus);

    return xReturn;
}
/*-----------------------------------------------------------*/

UBaseType_t uxTaskGetNumberOfTasks(void)
{
    /* A critical section is not required because the variables are of type
    BaseType_t. */
    return uxCurrentNumberOfTasks;
}
/*-----------------------------------------------------------*/

char *pcTaskGetName(
    TaskHandle_t xTaskToQuery) /*lint !e971 Unqualified char types are allowed
                                  for strings and single characters only. */
{
    TCB_t *pxTCB;

    /* If null is passed in here then the name of the calling task is being
    queried. */
    pxTCB = prvGetTCBFromHandle(xTaskToQuery);
    configASSERT(pxTCB);
    return &(pxTCB->pcTaskName[0]);
}
/*-----------------------------------------------------------*/

#if (INCLUDE_xTaskGetHandle == 1)

static TCB_t *prvSearchForNameWithinSingleList(
    List_t *pxList,
    const char pcNameToQuery[])
{
    TCB_t *pxNextTCB, *pxFirstTCB, *pxReturn = NULL;
    UBaseType_t x;
    char cNextChar;
    BaseType_t xBreakLoop;

    /* This function is called with the scheduler suspended. */

    if (listCURRENT_LIST_LENGTH(pxList) > (UBaseType_t)0) {
        listGET_OWNER_OF_NEXT_ENTRY(
            pxFirstTCB,
            pxList); /*lint !e9079 void * is used as this macro is used with
                        timers and co-routines too.  Alignment is known to be
                        fine as the type of the pointer stored and retrieved is
                        the same. */

        do {
            listGET_OWNER_OF_NEXT_ENTRY(
                pxNextTCB,
                pxList); /*lint !e9079 void * is used as this macro is used with
                            timers and co-routines too.  Alignment is known to
                            be fine as the type of the pointer stored and
                            retrieved is the same. */

            /* Check each character in the name looking for a match or
            mismatch. */
            xBreakLoop = pdFALSE;
            for (x = (UBaseType_t)0; x < (UBaseType_t)configMAX_TASK_NAME_LEN;
                 x++) {
                cNextChar = pxNextTCB->pcTaskName[x];

                if (cNextChar != pcNameToQuery[x]) {
                    /* Characters didn't match. */
                    xBreakLoop = pdTRUE;
                } else if (cNextChar == (char)0x00) {
                    /* Both strings terminated, a match must have been
                    found. */
                    pxReturn = pxNextTCB;
                    xBreakLoop = pdTRUE;
                } else {
                    mtCOVERAGE_TEST_MARKER();
                }

                if (xBreakLoop != pdFALSE) {
                    break;
                }
            }

            if (pxReturn != NULL) {
                /* The handle has been found. */
                break;
            }

        } while (pxNextTCB != pxFirstTCB);
    } else {
        mtCOVERAGE_TEST_MARKER();
    }

    return pxReturn;
}

#endif /* INCLUDE_xTaskGetHandle */
/*-----------------------------------------------------------*/

#if (INCLUDE_xTaskGetHandle == 1)

TaskHandle_t xTaskGetHandle(
    const char *pcNameToQuery) /*lint !e971 Unqualified char types are allowed
                                  for strings and single characters only. */
{
    UBaseType_t uxQueue = configMAX_PRIORITIES;
    TCB_t *pxTCB;

    /* Task names will be truncated to configMAX_TASK_NAME_LEN - 1 bytes. */
    configASSERT(strlen(pcNameToQuery) < configMAX_TASK_NAME_LEN);

    vTaskSuspendAll();
    {
        /* Search the ready lists. */
        do {
            uxQueue--;
            pxTCB = prvSearchForNameWithinSingleList(
                (List_t *)&(pxReadyTasksLists[uxQueue]), pcNameToQuery);

            if (pxTCB != NULL) {
                /* Found the handle. */
                break;
            }

        } while (
            uxQueue >
            (UBaseType_t)
                tskIDLE_PRIORITY); /*lint !e961 MISRA exception as the casts are
                                      only redundant for some ports. */

        /* Search the delayed lists. */
        if (pxTCB == NULL) {
            pxTCB = prvSearchForNameWithinSingleList(
                (List_t *)pxDelayedTaskList, pcNameToQuery);
        }

        if (pxTCB == NULL) {
            pxTCB = prvSearchForNameWithinSingleList(
                (List_t *)pxOverflowDelayedTaskList, pcNameToQuery);
        }

#    if (INCLUDE_vTaskSuspend == 1)
        {
            if (pxTCB == NULL) {
                /* Search the suspended list. */
                pxTCB = prvSearchForNameWithinSingleList(
                    &xSuspendedTaskList, pcNameToQuery);
            }
        }
#    endif

#    if (INCLUDE_vTaskDelete == 1)
        {
            if (pxTCB == NULL) {
                /* Search the deleted list. */
                pxTCB = prvSearchForNameWithinSingleList(
                    &xTasksWaitingTermination, pcNameToQuery);
            }
        }
#    endif
    }
    (void)xTaskResumeAll();

    return pxTCB;
}

#endif /* INCLUDE_xTaskGetHandle */
/*-----------------------------------------------------------*/

#if (configUSE_TRACE_FACILITY == 1)

UBaseType_t uxTaskGetSystemState(
    TaskStatus_t *const pxTaskStatusArray,
    const UBaseType_t uxArraySize,
    uint32_t *const pulTotalRunTime)
{
    UBaseType_t uxTask = 0, uxQueue = configMAX_PRIORITIES;

    vTaskSuspendAll();
    {
        /* Is there a space in the array for each task in the system? */
        if (uxArraySize >= uxCurrentNumberOfTasks) {
            /* Fill in an TaskStatus_t structure with information on each
            task in the Ready state. */
            do {
                uxQueue--;
                uxTask += prvListTasksWithinSingleList(
                    &(pxTaskStatusArray[uxTask]),
                    &(pxReadyTasksLists[uxQueue]),
                    eReady);

            } while (
                uxQueue >
                (UBaseType_t)
                    tskIDLE_PRIORITY); /*lint !e961 MISRA exception as the casts
                                          are only redundant for some ports. */

            /* Fill in an TaskStatus_t structure with information on each
            task in the Blocked state. */
            uxTask += prvListTasksWithinSingleList(
                &(pxTaskStatusArray[uxTask]),
                (List_t *)pxDelayedTaskList,
                eBlocked);
            uxTask += prvListTasksWithinSingleList(
                &(pxTaskStatusArray[uxTask]),
                (List_t *)pxOverflowDelayedTaskList,
                eBlocked);

#    if (INCLUDE_vTaskDelete == 1)
            {
                /* Fill in an TaskStatus_t structure with information on
                each task that has been deleted but not yet cleaned up. */
                uxTask += prvListTasksWithinSingleList(
                    &(pxTaskStatusArray[uxTask]),
                    &xTasksWaitingTermination,
                    eDeleted);
            }
#    endif

#    if (INCLUDE_vTaskSuspend == 1)
            {
                /* Fill in an TaskStatus_t structure with information on
                each task in the Suspended state. */
                uxTask += prvListTasksWithinSingleList(
                    &(pxTaskStatusArray[uxTask]),
                    &xSuspendedTaskList,
                    eSuspended);
            }
#    endif

#    if (configGENERATE_RUN_TIME_STATS == 1)
            {
                if (pulTotalRunTime != NULL) {
#        ifdef portALT_GET_RUN_TIME_COUNTER_VALUE
                    portALT_GET_RUN_TIME_COUNTER_VALUE((*pulTotalRunTime));
#        else
                    *pulTotalRunTime = portGET_RUN_TIME_COUNTER_VALUE();
#        endif
                }
            }
#    else
            {
                if (pulTotalRunTime != NULL) {
                    *pulTotalRunTime = 0;
                }
            }
#    endif
        } else {
            mtCOVERAGE_TEST_MARKER();
        }
    }
    (void)xTaskResumeAll();

    return uxTask;
}

#endif /* configUSE_TRACE_FACILITY */
/*----------------------------------------------------------*/

#if (INCLUDE_xTaskGetIdleTaskHandle == 1)

TaskHandle_t xTaskGetIdleTaskHandle(void)
{
    /* If xTaskGetIdleTaskHandle() is called before the scheduler has been
    started, then xIdleTaskHandle will be NULL. */
    configASSERT((xIdleTaskHandle != NULL));
    return xIdleTaskHandle;
}

#endif /* INCLUDE_xTaskGetIdleTaskHandle */
/*----------------------------------------------------------*/

/* This conditional compilation should use inequality to 0, not equality to 1.
This is to ensure vTaskStepTick() is available when user defined low power mode
implementations require configUSE_TICKLESS_IDLE to be set to a value other than
1. */
#if (configUSE_TICKLESS_IDLE != 0)

void vTaskStepTick(const TickType_t xTicksToJump)
{
    /* Correct the tick count value after a period during which the tick
    was suppressed.  Note this does *not* call the tick hook function for
    each stepped tick. */
    configASSERT((xTickCount + xTicksToJump) <= xNextTaskUnblockTime);
    xTickCount += xTicksToJump;
    traceINCREASE_TICK_COUNT(xTicksToJump);
}

#endif /* configUSE_TICKLESS_IDLE */
/*----------------------------------------------------------*/

BaseType_t xTaskCatchUpTicks(TickType_t xTicksToCatchUp)
{
    BaseType_t xYieldRequired = pdFALSE;

    /* Must not be called with the scheduler suspended as the implementation
    relies on xPendedTicks being wound down to 0 in xTaskResumeAll(). */
    configASSERT(uxSchedulerSuspended == 0);

    /* Use xPendedTicks to mimic xTicksToCatchUp number of ticks occurring when
    the scheduler is suspended so the ticks are executed in xTaskResumeAll(). */
    vTaskSuspendAll();
    xPendedTicks += xTicksToCatchUp;
    xYieldRequired = xTaskResumeAll();

    return xYieldRequired;
}
/*----------------------------------------------------------*/

#if (INCLUDE_xTaskAbortDelay == 1)

BaseType_t xTaskAbortDelay(TaskHandle_t xTask)
{
    TCB_t *pxTCB = xTask;
    BaseType_t xReturn;

    configASSERT(pxTCB);

    vTaskSuspendAll();
    {
        /* A task can only be prematurely removed from the Blocked state if
        it is actually in the Blocked state. */
        if (eTaskGetState(xTask) == eBlocked) {
            xReturn = pdPASS;

            /* Remove the reference to the task from the blocked list.  An
            interrupt won't touch the xStateListItem because the
            scheduler is suspended. */
            (void)uxListRemove(&(pxTCB->xStateListItem));

            /* Is the task waiting on an event also?  If so remove it from
            the event list too.  Interrupts can touch the event list item,
            even though the scheduler is suspended, so a critical section
            is used. */
            taskENTER_CRITICAL();
            {
                if (listLIST_ITEM_CONTAINER(&(pxTCB->xEventListItem)) != NULL) {
                    (void)uxListRemove(&(pxTCB->xEventListItem));

                    /* This lets the task know it was forcibly removed from the
                    blocked state so it should not re-evaluate its block time
                    and then block again. */
                    pxTCB->ucDelayAborted = pdTRUE;
                } else {
                    mtCOVERAGE_TEST_MARKER();
                }
            }
            taskEXIT_CRITICAL();

            /* Place the unblocked task into the appropriate ready list. */
            prvAddTaskToReadyList(pxTCB);

/* A task being unblocked cannot cause an immediate context
switch if preemption is turned off. */
#    if (configUSE_PREEMPTION == 1)
            {
                /* Preemption is on, but a context switch should only be
                performed if the unblocked task has a priority that is
                equal to or higher than the currently executing task. */
                if (pxTCB->uxPriority > pxCurrentTCB->uxPriority) {
                    /* Pend the yield to be performed when the scheduler
                    is unsuspended. */
                    xYieldPending = pdTRUE;
                } else {
                    mtCOVERAGE_TEST_MARKER();
                }
            }
#    endif /* configUSE_PREEMPTION */
        } else {
            xReturn = pdFAIL;
        }
    }
    (void)xTaskResumeAll();

    return xReturn;
}

#endif /* INCLUDE_xTaskAbortDelay */
/*----------------------------------------------------------*/

BaseType_t xTaskIncrementTick(void)
{
    TCB_t *pxTCB;
    TickType_t xItemValue;
    BaseType_t xSwitchRequired = pdFALSE;

    /* Called by the portable layer each time a tick interrupt occurs.
    Increments the tick then checks to see if the new tick value will cause any
    tasks to be unblocked. */
    traceTASK_INCREMENT_TICK(xTickCount);
    if (uxSchedulerSuspended == (UBaseType_t)pdFALSE) {
        /* Minor optimisation.  The tick count cannot change in this
        block. */
        const TickType_t xConstTickCount = xTickCount + (TickType_t)1;

        /* Increment the RTOS tick, switching the delayed and overflowed
        delayed lists if it wraps to 0. */
        xTickCount = xConstTickCount;

        if (xConstTickCount ==
            (TickType_t)0U) /*lint !e774 'if' does not always evaluate to false
                               as it is looking for an overflow. */
        {
            taskSWITCH_DELAYED_LISTS();
        } else {
            mtCOVERAGE_TEST_MARKER();
        }

        /* See if this tick has made a timeout expire.  Tasks are stored in
        the	queue in the order of their wake time - meaning once one task
        has been found whose block time has not expired there is no need to
        look any further down the list. */
        if (xConstTickCount >= xNextTaskUnblockTime) {
            for (;;) {
                if (listLIST_IS_EMPTY(pxDelayedTaskList) != pdFALSE) {
                    /* The delayed list is empty.  Set xNextTaskUnblockTime
                    to the maximum possible value so it is extremely
                    unlikely that the
                    if( xTickCount >= xNextTaskUnblockTime ) test will pass
                    next time through. */
                    xNextTaskUnblockTime =
                        portMAX_DELAY; /*lint !e961 MISRA exception as the casts
                                          are only redundant for some ports. */
                    break;
                } else {
                    /* The delayed list is not empty, get the value of the
                    item at the head of the delayed list.  This is the time
                    at which the task at the head of the delayed list must
                    be removed from the Blocked state. */
                    pxTCB = listGET_OWNER_OF_HEAD_ENTRY(
                        pxDelayedTaskList); /*lint !e9079 void * is used as this
                                               macro is used with timers and
                                               co-routines too.  Alignment is
                                               known to be fine as the type of
                                               the pointer stored and retrieved
                                               is the same. */
                    xItemValue =
                        listGET_LIST_ITEM_VALUE(&(pxTCB->xStateListItem));

                    if (xConstTickCount < xItemValue) {
                        /* It is not time to unblock this item yet, but the
                        item value is the time at which the task at the head
                        of the blocked list must be removed from the Blocked
                        state -	so record the item value in
                        xNextTaskUnblockTime. */
                        xNextTaskUnblockTime = xItemValue;
                        break; /*lint !e9011 Code structure here is deedmed
                                  easier to understand with multiple breaks. */
                    } else {
                        mtCOVERAGE_TEST_MARKER();
                    }

                    /* It is time to remove the item from the Blocked state. */
                    (void)uxListRemove(&(pxTCB->xStateListItem));

                    /* Is the task waiting on an event also?  If so remove
                    it from the event list. */
                    if (listLIST_ITEM_CONTAINER(&(pxTCB->xEventListItem)) !=
                        NULL) {
                        (void)uxListRemove(&(pxTCB->xEventListItem));
                    } else {
                        mtCOVERAGE_TEST_MARKER();
                    }

                    /* Place the unblocked task into the appropriate ready
                    list. */
                    prvAddTaskToReadyList(pxTCB);

/* A task being unblocked cannot cause an immediate
context switch if preemption is turned off. */
#if (configUSE_PREEMPTION == 1)
                    {
                        /* Preemption is on, but a context switch should
                        only be performed if the unblocked task has a
                        priority that is equal to or higher than the
                        currently executing task. */
                        if (pxTCB->uxPriority >= pxCurrentTCB->uxPriority) {
                            xSwitchRequired = pdTRUE;
                        } else {
                            mtCOVERAGE_TEST_MARKER();
                        }
                    }
#endif /* configUSE_PREEMPTION */
                }
            }
        }

/* Tasks of equal priority to the currently running task will share
processing time (time slice) if preemption is on, and the application
writer has not explicitly turned time slicing off. */
#if ((configUSE_PREEMPTION == 1) && (configUSE_TIME_SLICING == 1))
        {
            if (listCURRENT_LIST_LENGTH(
                    &(pxReadyTasksLists[pxCurrentTCB->uxPriority])) >
                (UBaseType_t)1) {
                xSwitchRequired = pdTRUE;
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
        }
#endif /* ( ( configUSE_PREEMPTION == 1 ) && ( configUSE_TIME_SLICING == 1 ) ) \
        */

#if (configUSE_TICK_HOOK == 1)
        {
            /* Guard against the tick hook being called when the pended tick
            count is being unwound (when the scheduler is being unlocked). */
            if (xPendedTicks == (TickType_t)0) {
                vApplicationTickHook();
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
        }
#endif /* configUSE_TICK_HOOK */

#if (configUSE_PREEMPTION == 1)
        {
            if (xYieldPending != pdFALSE) {
                xSwitchRequired = pdTRUE;
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
        }
#endif /* configUSE_PREEMPTION */
    } else {
        ++xPendedTicks;

/* The tick hook gets called at regular intervals, even if the
scheduler is locked. */
#if (configUSE_TICK_HOOK == 1)
        {
            vApplicationTickHook();
        }
#endif
    }

    return xSwitchRequired;
}
/*-----------------------------------------------------------*/

#if (configUSE_APPLICATION_TASK_TAG == 1)

void vTaskSetApplicationTaskTag(
    TaskHandle_t xTask,
    TaskHookFunction_t pxHookFunction)
{
    TCB_t *xTCB;

    /* If xTask is NULL then it is the task hook of the calling task that is
    getting set. */
    if (xTask == NULL) {
        xTCB = (TCB_t *)pxCurrentTCB;
    } else {
        xTCB = xTask;
    }

    /* Save the hook function in the TCB.  A critical section is required as
    the value can be accessed from an interrupt. */
    taskENTER_CRITICAL();
    {
        xTCB->pxTaskTag = pxHookFunction;
    }
    taskEXIT_CRITICAL();
}

#endif /* configUSE_APPLICATION_TASK_TAG */
/*-----------------------------------------------------------*/

#if (configUSE_APPLICATION_TASK_TAG == 1)

TaskHookFunction_t xTaskGetApplicationTaskTag(TaskHandle_t xTask)
{
    TCB_t *pxTCB;
    TaskHookFunction_t xReturn;

    /* If xTask is NULL then set the calling task's hook. */
    pxTCB = prvGetTCBFromHandle(xTask);

    /* Save the hook function in the TCB.  A critical section is required as
    the value can be accessed from an interrupt. */
    taskENTER_CRITICAL();
    {
        xReturn = pxTCB->pxTaskTag;
    }
    taskEXIT_CRITICAL();

    return xReturn;
}

#endif /* configUSE_APPLICATION_TASK_TAG */
/*-----------------------------------------------------------*/

#if (configUSE_APPLICATION_TASK_TAG == 1)

TaskHookFunction_t xTaskGetApplicationTaskTagFromISR(TaskHandle_t xTask)
{
    TCB_t *pxTCB;
    TaskHookFunction_t xReturn;
    UBaseType_t uxSavedInterruptStatus;

    /* If xTask is NULL then set the calling task's hook. */
    pxTCB = prvGetTCBFromHandle(xTask);

    /* Save the hook function in the TCB.  A critical section is required as
    the value can be accessed from an interrupt. */
    uxSavedInterruptStatus = portSET_INTERRUPT_MASK_FROM_ISR();
    {
        xReturn = pxTCB->pxTaskTag;
    }
    portCLEAR_INTERRUPT_MASK_FROM_ISR(uxSavedInterruptStatus);

    return xReturn;
}

#endif /* configUSE_APPLICATION_TASK_TAG */
/*-----------------------------------------------------------*/

#if (configUSE_APPLICATION_TASK_TAG == 1)

BaseType_t xTaskCallApplicationTaskHook(TaskHandle_t xTask, void *pvParameter)
{
    TCB_t *xTCB;
    BaseType_t xReturn;

    /* If xTask is NULL then we are calling our own task hook. */
    if (xTask == NULL) {
        xTCB = pxCurrentTCB;
    } else {
        xTCB = xTask;
    }

    if (xTCB->pxTaskTag != NULL) {
        xReturn = xTCB->pxTaskTag(pvParameter);
    } else {
        xReturn = pdFAIL;
    }

    return xReturn;
}

#endif /* configUSE_APPLICATION_TASK_TAG */
/*-----------------------------------------------------------*/

void vTaskSwitchContext(void)
{
    if (uxSchedulerSuspended != (UBaseType_t)pdFALSE) {
        /* The scheduler is currently suspended - do not allow a context
        switch. */
        xYieldPending = pdTRUE;
    } else {
        xYieldPending = pdFALSE;
        traceTASK_SWITCHED_OUT();

#if (configGENERATE_RUN_TIME_STATS == 1)
        {
#    ifdef portALT_GET_RUN_TIME_COUNTER_VALUE
            portALT_GET_RUN_TIME_COUNTER_VALUE(ulTotalRunTime);
#    else
            ulTotalRunTime = portGET_RUN_TIME_COUNTER_VALUE();
#    endif

            /* Add the amount of time the task has been running to the
            accumulated time so far.  The time the task started running was
            stored in ulTaskSwitchedInTime.  Note that there is no overflow
            protection here so count values are only valid until the timer
            overflows.  The guard against negative values is to protect
            against suspect run time stat counter implementations - which
            are provided by the application, not the kernel. */
            if (ulTotalRunTime > ulTaskSwitchedInTime) {
                pxCurrentTCB->ulRunTimeCounter +=
                    (ulTotalRunTime - ulTaskSwitchedInTime);
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
            ulTaskSwitchedInTime = ulTotalRunTime;
        }
#endif /* configGENERATE_RUN_TIME_STATS */

        /* Check for stack overflow, if configured. */
        taskCHECK_FOR_STACK_OVERFLOW();

/* Before the currently running task is switched out, save its errno. */
#if (configUSE_POSIX_ERRNO == 1)
        {
            pxCurrentTCB->iTaskErrno = FreeRTOS_errno;
        }
#endif

        /* Select a new task to run using either the generic C or port
        optimised asm code. */
        taskSELECT_HIGHEST_PRIORITY_TASK(); /*lint !e9079 void * is used as this
                                               macro is used with timers and
                                               co-routines too.  Alignment is
                                               known to be fine as the type of
                                               the pointer stored and retrieved
                                               is the same. */
        traceTASK_SWITCHED_IN();

/* After the new task is switched in, update the global errno. */
#if (configUSE_POSIX_ERRNO == 1)
        {
            FreeRTOS_errno = pxCurrentTCB->iTaskErrno;
        }
#endif

#if (configUSE_NEWLIB_REENTRANT == 1)
        {
            /* Switch Newlib's _impure_ptr variable to point to the _reent
            structure specific to this task.
            See the third party link
            http://www.nadler.com/embedded/newlibAndFreeRTOS.html
            for additional information. */
            _impure_ptr = &(pxCurrentTCB->xNewLib_reent);
        }
#endif /* configUSE_NEWLIB_REENTRANT */
    }
}
/*-----------------------------------------------------------*/

void vTaskPlaceOnEventList(
    List_t *const pxEventList,
    const TickType_t xTicksToWait)
{
    configASSERT(pxEventList);

    /* THIS FUNCTION MUST BE CALLED WITH EITHER INTERRUPTS DISABLED OR THE
    SCHEDULER SUSPENDED AND THE QUEUE BEING ACCESSED LOCKED. */

    /* Place the event list item of the TCB in the appropriate event list.
    This is placed in the list in priority order so the highest priority task
    is the first to be woken by the event.  The queue that contains the event
    list is locked, preventing simultaneous access from interrupts. */
    vListInsert(pxEventList, &(pxCurrentTCB->xEventListItem));

    prvAddCurrentTaskToDelayedList(xTicksToWait, pdTRUE);
}
/*-----------------------------------------------------------*/

void vTaskPlaceOnUnorderedEventList(
    List_t *pxEventList,
    const TickType_t xItemValue,
    const TickType_t xTicksToWait)
{
    configASSERT(pxEventList);

    /* THIS FUNCTION MUST BE CALLED WITH THE SCHEDULER SUSPENDED.  It is used by
    the event groups implementation. */
    configASSERT(uxSchedulerSuspended != 0);

    /* Store the item value in the event list item.  It is safe to access the
    event list item here as interrupts won't access the event list item of a
    task that is not in the Blocked state. */
    listSET_LIST_ITEM_VALUE(
        &(pxCurrentTCB->xEventListItem),
        xItemValue | taskEVENT_LIST_ITEM_VALUE_IN_USE);

    /* Place the event list item of the TCB at the end of the appropriate event
    list.  It is safe to access the event list here because it is part of an
    event group implementation - and interrupts don't access event groups
    directly (instead they access them indirectly by pending function calls to
    the task level). */
    vListInsertEnd(pxEventList, &(pxCurrentTCB->xEventListItem));

    prvAddCurrentTaskToDelayedList(xTicksToWait, pdTRUE);
}
/*-----------------------------------------------------------*/

#if (configUSE_TIMERS == 1)

void vTaskPlaceOnEventListRestricted(
    List_t *const pxEventList,
    TickType_t xTicksToWait,
    const BaseType_t xWaitIndefinitely)
{
    configASSERT(pxEventList);

    /* This function should not be called by application code hence the
    'Restricted' in its name.  It is not part of the public API.  It is
    designed for use by kernel code, and has special calling requirements -
    it should be called with the scheduler suspended. */

    /* Place the event list item of the TCB in the appropriate event list.
    In this case it is assume that this is the only task that is going to
    be waiting on this event list, so the faster vListInsertEnd() function
    can be used in place of vListInsert. */
    vListInsertEnd(pxEventList, &(pxCurrentTCB->xEventListItem));

    /* If the task should block indefinitely then set the block time to a
    value that will be recognised as an indefinite delay inside the
    prvAddCurrentTaskToDelayedList() function. */
    if (xWaitIndefinitely != pdFALSE) {
        xTicksToWait = portMAX_DELAY;
    }

    traceTASK_DELAY_UNTIL((xTickCount + xTicksToWait));
    prvAddCurrentTaskToDelayedList(xTicksToWait, xWaitIndefinitely);
}

#endif /* configUSE_TIMERS */
/*-----------------------------------------------------------*/

BaseType_t xTaskRemoveFromEventList(const List_t *const pxEventList)
{
    TCB_t *pxUnblockedTCB;
    BaseType_t xReturn;

    /* THIS FUNCTION MUST BE CALLED FROM A CRITICAL SECTION.  It can also be
    called from a critical section within an ISR. */

    /* The event list is sorted in priority order, so the first in the list can
    be removed as it is known to be the highest priority.  Remove the TCB from
    the delayed list, and add it to the ready list.

    If an event is for a queue that is locked then this function will never
    get called - the lock count on the queue will get modified instead.  This
    means exclusive access to the event list is guaranteed here.

    This function assumes that a check has already been made to ensure that
    pxEventList is not empty. */
    pxUnblockedTCB = listGET_OWNER_OF_HEAD_ENTRY(
        pxEventList); /*lint !e9079 void * is used as this macro is used with
                         timers and co-routines too.  Alignment is known to be
                         fine as the type of the pointer stored and retrieved is
                         the same. */
    configASSERT(pxUnblockedTCB);
    (void)uxListRemove(&(pxUnblockedTCB->xEventListItem));

    if (uxSchedulerSuspended == (UBaseType_t)pdFALSE) {
        (void)uxListRemove(&(pxUnblockedTCB->xStateListItem));
        prvAddTaskToReadyList(pxUnblockedTCB);

#if (configUSE_TICKLESS_IDLE != 0)
        {
            /* If a task is blocked on a kernel object then xNextTaskUnblockTime
            might be set to the blocked task's time out time.  If the task is
            unblocked for a reason other than a timeout xNextTaskUnblockTime is
            normally left unchanged, because it is automatically reset to a new
            value when the tick count equals xNextTaskUnblockTime.  However if
            tickless idling is used it might be more important to enter sleep
            mode at the earliest possible time - so reset xNextTaskUnblockTime
            here to ensure it is updated at the earliest possible time. */
            prvResetNextTaskUnblockTime();
        }
#endif
    } else {
        /* The delayed and ready lists cannot be accessed, so hold this task
        pending until the scheduler is resumed. */
        vListInsertEnd(&(xPendingReadyList), &(pxUnblockedTCB->xEventListItem));
    }

    if (pxUnblockedTCB->uxPriority > pxCurrentTCB->uxPriority) {
        /* Return true if the task removed from the event list has a higher
        priority than the calling task.  This allows the calling task to know if
        it should force a context switch now. */
        xReturn = pdTRUE;

        /* Mark that a yield is pending in case the user is not using the
        "xHigherPriorityTaskWoken" parameter to an ISR safe FreeRTOS function.
      */
        xYieldPending = pdTRUE;
    } else {
        xReturn = pdFALSE;
    }

    return xReturn;
}
/*-----------------------------------------------------------*/

void vTaskRemoveFromUnorderedEventList(
    ListItem_t *pxEventListItem,
    const TickType_t xItemValue)
{
    TCB_t *pxUnblockedTCB;

    /* THIS FUNCTION MUST BE CALLED WITH THE SCHEDULER SUSPENDED.  It is used by
    the event flags implementation. */
    configASSERT(uxSchedulerSuspended != pdFALSE);

    /* Store the new item value in the event list. */
    listSET_LIST_ITEM_VALUE(
        pxEventListItem, xItemValue | taskEVENT_LIST_ITEM_VALUE_IN_USE);

    /* Remove the event list form the event flag.  Interrupts do not access
    event flags. */
    pxUnblockedTCB = listGET_LIST_ITEM_OWNER(
        pxEventListItem); /*lint !e9079 void * is used as this macro is used
                             with timers and co-routines too.  Alignment is
                             known to be fine as the type of the pointer stored
                             and retrieved is the same. */
    configASSERT(pxUnblockedTCB);
    (void)uxListRemove(pxEventListItem);

#if (configUSE_TICKLESS_IDLE != 0)
    {
        /* If a task is blocked on a kernel object then xNextTaskUnblockTime
        might be set to the blocked task's time out time.  If the task is
        unblocked for a reason other than a timeout xNextTaskUnblockTime is
        normally left unchanged, because it is automatically reset to a new
        value when the tick count equals xNextTaskUnblockTime.  However if
        tickless idling is used it might be more important to enter sleep mode
        at the earliest possible time - so reset xNextTaskUnblockTime here to
        ensure it is updated at the earliest possible time. */
        prvResetNextTaskUnblockTime();
    }
#endif

    /* Remove the task from the delayed list and add it to the ready list.  The
    scheduler is suspended so interrupts will not be accessing the ready
    lists. */
    (void)uxListRemove(&(pxUnblockedTCB->xStateListItem));
    prvAddTaskToReadyList(pxUnblockedTCB);

    if (pxUnblockedTCB->uxPriority > pxCurrentTCB->uxPriority) {
        /* The unblocked task has a priority above that of the calling task, so
        a context switch is required.  This function is called with the
        scheduler suspended so xYieldPending is set so the context switch
        occurs immediately that the scheduler is resumed (unsuspended). */
        xYieldPending = pdTRUE;
    }
}
/*-----------------------------------------------------------*/

void vTaskSetTimeOutState(TimeOut_t *const pxTimeOut)
{
    configASSERT(pxTimeOut);
    taskENTER_CRITICAL();
    {
        pxTimeOut->xOverflowCount = xNumOfOverflows;
        pxTimeOut->xTimeOnEntering = xTickCount;
    }
    taskEXIT_CRITICAL();
}
/*-----------------------------------------------------------*/

void vTaskInternalSetTimeOutState(TimeOut_t *const pxTimeOut)
{
    /* For internal use only as it does not use a critical section. */
    pxTimeOut->xOverflowCount = xNumOfOverflows;
    pxTimeOut->xTimeOnEntering = xTickCount;
}
/*-----------------------------------------------------------*/

BaseType_t xTaskCheckForTimeOut(
    TimeOut_t *const pxTimeOut,
    TickType_t *const pxTicksToWait)
{
    BaseType_t xReturn;

    configASSERT(pxTimeOut);
    configASSERT(pxTicksToWait);

    taskENTER_CRITICAL();
    {
        /* Minor optimisation.  The tick count cannot change in this block. */
        const TickType_t xConstTickCount = xTickCount;
        const TickType_t xElapsedTime =
            xConstTickCount - pxTimeOut->xTimeOnEntering;

#if (INCLUDE_xTaskAbortDelay == 1)
        if (pxCurrentTCB->ucDelayAborted != (uint8_t)pdFALSE) {
            /* The delay was aborted, which is not the same as a time out,
            but has the same result. */
            pxCurrentTCB->ucDelayAborted = pdFALSE;
            xReturn = pdTRUE;
        } else
#endif

#if (INCLUDE_vTaskSuspend == 1)
            if (*pxTicksToWait == portMAX_DELAY) {
            /* If INCLUDE_vTaskSuspend is set to 1 and the block time
            specified is the maximum block time then the task should block
            indefinitely, and therefore never time out. */
            xReturn = pdFALSE;
        } else
#endif

            if ((xNumOfOverflows != pxTimeOut->xOverflowCount) &&
                (xConstTickCount >=
                 pxTimeOut
                     ->xTimeOnEntering)) /*lint !e525 Indentation preferred as
                                            is to make code within pre-processor
                                            directives clearer. */
        {
            /* The tick count is greater than the time at which
            vTaskSetTimeout() was called, but has also overflowed since
            vTaskSetTimeOut() was called.  It must have wrapped all the way
            around and gone past again. This passed since vTaskSetTimeout()
            was called. */
            xReturn = pdTRUE;
        } else if (xElapsedTime < *pxTicksToWait) /*lint !e961 Explicit casting
                                                     is only redundant with some
                                                     compilers, whereas others
                                                     require it to prevent
                                                     integer conversion errors.
                                                   */
        {
            /* Not a genuine timeout. Adjust parameters for time remaining. */
            *pxTicksToWait -= xElapsedTime;
            vTaskInternalSetTimeOutState(pxTimeOut);
            xReturn = pdFALSE;
        } else {
            *pxTicksToWait = 0;
            xReturn = pdTRUE;
        }
    }
    taskEXIT_CRITICAL();

    return xReturn;
}
/*-----------------------------------------------------------*/

void vTaskMissedYield(void)
{
    xYieldPending = pdTRUE;
}
/*-----------------------------------------------------------*/

#if (configUSE_TRACE_FACILITY == 1)

UBaseType_t uxTaskGetTaskNumber(TaskHandle_t xTask)
{
    UBaseType_t uxReturn;
    TCB_t const *pxTCB;

    if (xTask != NULL) {
        pxTCB = xTask;
        uxReturn = pxTCB->uxTaskNumber;
    } else {
        uxReturn = 0U;
    }

    return uxReturn;
}

#endif /* configUSE_TRACE_FACILITY */
/*-----------------------------------------------------------*/

#if (configUSE_TRACE_FACILITY == 1)

void vTaskSetTaskNumber(TaskHandle_t xTask, const UBaseType_t uxHandle)
{
    TCB_t *pxTCB;

    if (xTask != NULL) {
        pxTCB = xTask;
        pxTCB->uxTaskNumber = uxHandle;
    }
}

#endif /* configUSE_TRACE_FACILITY */

/*
 * -----------------------------------------------------------
 * The Idle task.
 * ----------------------------------------------------------
 *
 * The portTASK_FUNCTION() macro is used to allow port/compiler specific
 * language extensions.  The equivalent prototype for this function is:
 *
 * void prvIdleTask( void *pvParameters );
 *
 */
static portTASK_FUNCTION(prvIdleTask, pvParameters)
{
    /* Stop warnings. */
    (void)pvParameters;

    /** THIS IS THE RTOS IDLE TASK - WHICH IS CREATED AUTOMATICALLY WHEN THE
    SCHEDULER IS STARTED. **/

    /* In case a task that has a secure context deletes itself, in which case
    the idle task is responsible for deleting the task's secure context, if
    any. */
    portALLOCATE_SECURE_CONTEXT(configMINIMAL_SECURE_STACK_SIZE);

    for (;;) {
        /* See if any tasks have deleted themselves - if so then the idle task
        is responsible for freeing the deleted task's TCB and stack. */
        prvCheckTasksWaitingTermination();

#if (configUSE_PREEMPTION == 0)
        {
            /* If we are not using preemption we keep forcing a task switch to
            see if any other task has become available.  If we are using
            preemption we don't need to do this as any task becoming available
            will automatically get the processor anyway. */
            taskYIELD();
        }
#endif /* configUSE_PREEMPTION */

#if ((configUSE_PREEMPTION == 1) && (configIDLE_SHOULD_YIELD == 1))
        {
            /* When using preemption tasks of equal priority will be
            timesliced.  If a task that is sharing the idle priority is ready
            to run then the idle task should yield before the end of the
            timeslice.

            A critical region is not required here as we are just reading from
            the list, and an occasional incorrect value will not matter.  If
            the ready list at the idle priority contains more than one task
            then a task other than the idle task is ready to execute. */
            if (listCURRENT_LIST_LENGTH(
                    &(pxReadyTasksLists[tskIDLE_PRIORITY])) > (UBaseType_t)1) {
                taskYIELD();
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
        }
#endif /* ( ( configUSE_PREEMPTION == 1 ) && ( configIDLE_SHOULD_YIELD == 1 ) \
          ) */

#if (configUSE_IDLE_HOOK == 1)
        {
            extern void vApplicationIdleHook(void);

            /* Call the user defined function from within the idle task.  This
            allows the application designer to add background functionality
            without the overhead of a separate task.
            NOTE: vApplicationIdleHook() MUST NOT, UNDER ANY CIRCUMSTANCES,
            CALL A FUNCTION THAT MIGHT BLOCK. */
            vApplicationIdleHook();
        }
#endif /* configUSE_IDLE_HOOK */

/* This conditional compilation should use inequality to 0, not equality
to 1.  This is to ensure portSUPPRESS_TICKS_AND_SLEEP() is called when
user defined low power mode	implementations require
configUSE_TICKLESS_IDLE to be set to a value other than 1. */
#if (configUSE_TICKLESS_IDLE != 0)
        {
            TickType_t xExpectedIdleTime;

            /* It is not desirable to suspend then resume the scheduler on
            each iteration of the idle task.  Therefore, a preliminary
            test of the expected idle time is performed without the
            scheduler suspended.  The result here is not necessarily
            valid. */
            xExpectedIdleTime = prvGetExpectedIdleTime();

            if (xExpectedIdleTime >= configEXPECTED_IDLE_TIME_BEFORE_SLEEP) {
                vTaskSuspendAll();
                {
                    /* Now the scheduler is suspended, the expected idle
                    time can be sampled again, and this time its value can
                    be used. */
                    configASSERT(xNextTaskUnblockTime >= xTickCount);
                    xExpectedIdleTime = prvGetExpectedIdleTime();

                    /* Define the following macro to set xExpectedIdleTime to 0
                    if the application does not want
                    portSUPPRESS_TICKS_AND_SLEEP() to be called. */
                    configPRE_SUPPRESS_TICKS_AND_SLEEP_PROCESSING(
                        xExpectedIdleTime);

                    if (xExpectedIdleTime >=
                        configEXPECTED_IDLE_TIME_BEFORE_SLEEP) {
                        traceLOW_POWER_IDLE_BEGIN();
                        portSUPPRESS_TICKS_AND_SLEEP(xExpectedIdleTime);
                        traceLOW_POWER_IDLE_END();
                    } else {
                        mtCOVERAGE_TEST_MARKER();
                    }
                }
                (void)xTaskResumeAll();
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
        }
#endif /* configUSE_TICKLESS_IDLE */
    }
}
/*-----------------------------------------------------------*/

#if (configUSE_TICKLESS_IDLE != 0)

eSleepModeStatus eTaskConfirmSleepModeStatus(void)
{
    /* The idle task exists in addition to the application tasks. */
    const UBaseType_t uxNonApplicationTasks = 1;
    eSleepModeStatus eReturn = eStandardSleep;

    /* This function must be called from a critical section. */

    if (listCURRENT_LIST_LENGTH(&xPendingReadyList) != 0) {
        /* A task was made ready while the scheduler was suspended. */
        eReturn = eAbortSleep;
    } else if (xYieldPending != pdFALSE) {
        /* A yield was pended while the scheduler was suspended. */
        eReturn = eAbortSleep;
    } else {
        /* If all the tasks are in the suspended list (which might mean they
        have an infinite block time rather than actually being suspended)
        then it is safe to turn all clocks off and just wait for external
        interrupts. */
        if (listCURRENT_LIST_LENGTH(&xSuspendedTaskList) ==
            (uxCurrentNumberOfTasks - uxNonApplicationTasks)) {
            eReturn = eNoTasksWaitingTimeout;
        } else {
            mtCOVERAGE_TEST_MARKER();
        }
    }

    return eReturn;
}

#endif /* configUSE_TICKLESS_IDLE */
/*-----------------------------------------------------------*/

#if (configNUM_THREAD_LOCAL_STORAGE_POINTERS != 0)

void vTaskSetThreadLocalStoragePointer(
    TaskHandle_t xTaskToSet,
    BaseType_t xIndex,
    void *pvValue)
{
    TCB_t *pxTCB;

    if (xIndex < configNUM_THREAD_LOCAL_STORAGE_POINTERS) {
        pxTCB = prvGetTCBFromHandle(xTaskToSet);
        configASSERT(pxTCB != NULL);
        pxTCB->pvThreadLocalStoragePointers[xIndex] = pvValue;
    }
}

#endif /* configNUM_THREAD_LOCAL_STORAGE_POINTERS */
/*-----------------------------------------------------------*/

#if (configNUM_THREAD_LOCAL_STORAGE_POINTERS != 0)

void *pvTaskGetThreadLocalStoragePointer(
    TaskHandle_t xTaskToQuery,
    BaseType_t xIndex)
{
    void *pvReturn = NULL;
    TCB_t *pxTCB;

    if (xIndex < configNUM_THREAD_LOCAL_STORAGE_POINTERS) {
        pxTCB = prvGetTCBFromHandle(xTaskToQuery);
        pvReturn = pxTCB->pvThreadLocalStoragePointers[xIndex];
    } else {
        pvReturn = NULL;
    }

    return pvReturn;
}

#endif /* configNUM_THREAD_LOCAL_STORAGE_POINTERS */
/*-----------------------------------------------------------*/

#if (portUSING_MPU_WRAPPERS == 1)

void vTaskAllocateMPURegions(
    TaskHandle_t xTaskToModify,
    const MemoryRegion_t *const xRegions)
{
    TCB_t *pxTCB;

    /* If null is passed in here then we are modifying the MPU settings of
    the calling task. */
    pxTCB = prvGetTCBFromHandle(xTaskToModify);

    vPortStoreTaskMPUSettings(&(pxTCB->xMPUSettings), xRegions, NULL, 0);
}

#endif /* portUSING_MPU_WRAPPERS */
/*-----------------------------------------------------------*/

static void prvInitialiseTaskLists(void)
{
    UBaseType_t uxPriority;

    for (uxPriority = (UBaseType_t)0U;
         uxPriority < (UBaseType_t)configMAX_PRIORITIES;
         uxPriority++) {
        vListInitialise(&(pxReadyTasksLists[uxPriority]));
    }

    vListInitialise(&xDelayedTaskList1);
    vListInitialise(&xDelayedTaskList2);
    vListInitialise(&xPendingReadyList);

#if (INCLUDE_vTaskDelete == 1)
    {
        vListInitialise(&xTasksWaitingTermination);
    }
#endif /* INCLUDE_vTaskDelete */

#if (INCLUDE_vTaskSuspend == 1)
    {
        vListInitialise(&xSuspendedTaskList);
    }
#endif /* INCLUDE_vTaskSuspend */

    /* Start with pxDelayedTaskList using list1 and the
    pxOverflowDelayedTaskList using list2. */
    pxDelayedTaskList = &xDelayedTaskList1;
    pxOverflowDelayedTaskList = &xDelayedTaskList2;
}
/*-----------------------------------------------------------*/

static void prvCheckTasksWaitingTermination(void)
{
    /** THIS FUNCTION IS CALLED FROM THE RTOS IDLE TASK **/

#if (INCLUDE_vTaskDelete == 1)
    {
        TCB_t *pxTCB;

        /* uxDeletedTasksWaitingCleanUp is used to prevent taskENTER_CRITICAL()
        being called too often in the idle task. */
        while (uxDeletedTasksWaitingCleanUp > (UBaseType_t)0U) {
            taskENTER_CRITICAL();
            {
                pxTCB = listGET_OWNER_OF_HEAD_ENTRY(
                    (&xTasksWaitingTermination)); /*lint !e9079 void * is used
                                                     as this macro is used with
                                                     timers and co-routines too.
                                                     Alignment is known to be
                                                     fine as the type of the
                                                     pointer stored and
                                                     retrieved is the same. */
                (void)uxListRemove(&(pxTCB->xStateListItem));
                --uxCurrentNumberOfTasks;
                --uxDeletedTasksWaitingCleanUp;
            }
            taskEXIT_CRITICAL();

            prvDeleteTCB(pxTCB);
        }
    }
#endif /* INCLUDE_vTaskDelete */
}
/*-----------------------------------------------------------*/

#if (configUSE_TRACE_FACILITY == 1)

void vTaskGetInfo(
    TaskHandle_t xTask,
    TaskStatus_t *pxTaskStatus,
    BaseType_t xGetFreeStackSpace,
    eTaskState eState)
{
    TCB_t *pxTCB;

    /* xTask is NULL then get the state of the calling task. */
    pxTCB = prvGetTCBFromHandle(xTask);

    pxTaskStatus->xHandle = (TaskHandle_t)pxTCB;
    pxTaskStatus->pcTaskName = (const char *)&(pxTCB->pcTaskName[0]);
    pxTaskStatus->uxCurrentPriority = pxTCB->uxPriority;
    pxTaskStatus->pxStackBase = pxTCB->pxStack;
    pxTaskStatus->xTaskNumber = pxTCB->uxTCBNumber;

#    if (configUSE_MUTEXES == 1)
    {
        pxTaskStatus->uxBasePriority = pxTCB->uxBasePriority;
    }
#    else
    {
        pxTaskStatus->uxBasePriority = 0;
    }
#    endif

#    if (configGENERATE_RUN_TIME_STATS == 1)
    {
        pxTaskStatus->ulRunTimeCounter = pxTCB->ulRunTimeCounter;
    }
#    else
    {
        pxTaskStatus->ulRunTimeCounter = 0;
    }
#    endif

    /* Obtaining the task state is a little fiddly, so is only done if the
    value of eState passed into this function is eInvalid - otherwise the
    state is just set to whatever is passed in. */
    if (eState != eInvalid) {
        if (pxTCB == pxCurrentTCB) {
            pxTaskStatus->eCurrentState = eRunning;
        } else {
            pxTaskStatus->eCurrentState = eState;

#    if (INCLUDE_vTaskSuspend == 1)
            {
                /* If the task is in the suspended list then there is a
                chance it is actually just blocked indefinitely - so really
                it should be reported as being in the Blocked state. */
                if (eState == eSuspended) {
                    vTaskSuspendAll();
                    {
                        if (listLIST_ITEM_CONTAINER(&(pxTCB->xEventListItem)) !=
                            NULL) {
                            pxTaskStatus->eCurrentState = eBlocked;
                        }
                    }
                    (void)xTaskResumeAll();
                }
            }
#    endif /* INCLUDE_vTaskSuspend */
        }
    } else {
        pxTaskStatus->eCurrentState = eTaskGetState(pxTCB);
    }

    /* Obtaining the stack space takes some time, so the xGetFreeStackSpace
    parameter is provided to allow it to be skipped. */
    if (xGetFreeStackSpace != pdFALSE) {
#    if (portSTACK_GROWTH > 0)
        {
            pxTaskStatus->usStackHighWaterMark =
                prvTaskCheckFreeStackSpace((uint8_t *)pxTCB->pxEndOfStack);
        }
#    else
        {
            pxTaskStatus->usStackHighWaterMark =
                prvTaskCheckFreeStackSpace((uint8_t *)pxTCB->pxStack);
        }
#    endif
    } else {
        pxTaskStatus->usStackHighWaterMark = 0;
    }
}

#endif /* configUSE_TRACE_FACILITY */
/*-----------------------------------------------------------*/

#if (configUSE_TRACE_FACILITY == 1)

static UBaseType_t prvListTasksWithinSingleList(
    TaskStatus_t *pxTaskStatusArray,
    List_t *pxList,
    eTaskState eState)
{
    configLIST_VOLATILE TCB_t *pxNextTCB, *pxFirstTCB;
    UBaseType_t uxTask = 0;

    if (listCURRENT_LIST_LENGTH(pxList) > (UBaseType_t)0) {
        listGET_OWNER_OF_NEXT_ENTRY(
            pxFirstTCB,
            pxList); /*lint !e9079 void * is used as this macro is used with
                        timers and co-routines too.  Alignment is known to be
                        fine as the type of the pointer stored and retrieved is
                        the same. */

        /* Populate an TaskStatus_t structure within the
        pxTaskStatusArray array for each task that is referenced from
        pxList.  See the definition of TaskStatus_t in task.h for the
        meaning of each TaskStatus_t structure member. */
        do {
            listGET_OWNER_OF_NEXT_ENTRY(
                pxNextTCB,
                pxList); /*lint !e9079 void * is used as this macro is used with
                            timers and co-routines too.  Alignment is known to
                            be fine as the type of the pointer stored and
                            retrieved is the same. */
            vTaskGetInfo(
                (TaskHandle_t)pxNextTCB,
                &(pxTaskStatusArray[uxTask]),
                pdTRUE,
                eState);
            uxTask++;
        } while (pxNextTCB != pxFirstTCB);
    } else {
        mtCOVERAGE_TEST_MARKER();
    }

    return uxTask;
}

#endif /* configUSE_TRACE_FACILITY */
/*-----------------------------------------------------------*/

#if ( \
    (configUSE_TRACE_FACILITY == 1) || \
    (INCLUDE_uxTaskGetStackHighWaterMark == 1) || \
    (INCLUDE_uxTaskGetStackHighWaterMark2 == 1))

static configSTACK_DEPTH_TYPE prvTaskCheckFreeStackSpace(
    const uint8_t *pucStackByte)
{
    uint32_t ulCount = 0U;

    while (*pucStackByte == (uint8_t)tskSTACK_FILL_BYTE) {
        pucStackByte -= portSTACK_GROWTH;
        ulCount++;
    }

    ulCount /=
        (uint32_t)sizeof(StackType_t); /*lint !e961 Casting is not redundant on
                                          smaller architectures. */

    return (configSTACK_DEPTH_TYPE)ulCount;
}

#endif /* ( ( configUSE_TRACE_FACILITY == 1 ) || ( \
          INCLUDE_uxTaskGetStackHighWaterMark == 1 ) || ( \
          INCLUDE_uxTaskGetStackHighWaterMark2 == 1 ) ) */
/*-----------------------------------------------------------*/

#if (INCLUDE_uxTaskGetStackHighWaterMark2 == 1)

/* uxTaskGetStackHighWaterMark() and uxTaskGetStackHighWaterMark2() are the
same except for their return type.  Using configSTACK_DEPTH_TYPE allows the
user to determine the return type.  It gets around the problem of the value
overflowing on 8-bit types without breaking backward compatibility for
applications that expect an 8-bit return type. */
configSTACK_DEPTH_TYPE uxTaskGetStackHighWaterMark2(TaskHandle_t xTask)
{
    TCB_t *pxTCB;
    uint8_t *pucEndOfStack;
    configSTACK_DEPTH_TYPE uxReturn;

    /* uxTaskGetStackHighWaterMark() and uxTaskGetStackHighWaterMark2() are
    the same except for their return type.  Using configSTACK_DEPTH_TYPE
    allows the user to determine the return type.  It gets around the
    problem of the value overflowing on 8-bit types without breaking
    backward compatibility for applications that expect an 8-bit return
    type. */

    pxTCB = prvGetTCBFromHandle(xTask);

#    if portSTACK_GROWTH < 0
    {
        pucEndOfStack = (uint8_t *)pxTCB->pxStack;
    }
#    else
    {
        pucEndOfStack = (uint8_t *)pxTCB->pxEndOfStack;
    }
#    endif

    uxReturn = prvTaskCheckFreeStackSpace(pucEndOfStack);

    return uxReturn;
}

#endif /* INCLUDE_uxTaskGetStackHighWaterMark2 */
/*-----------------------------------------------------------*/

#if (INCLUDE_uxTaskGetStackHighWaterMark == 1)

UBaseType_t uxTaskGetStackHighWaterMark(TaskHandle_t xTask)
{
    TCB_t *pxTCB;
    uint8_t *pucEndOfStack;
    UBaseType_t uxReturn;

    pxTCB = prvGetTCBFromHandle(xTask);

#    if portSTACK_GROWTH < 0
    {
        pucEndOfStack = (uint8_t *)pxTCB->pxStack;
    }
#    else
    {
        pucEndOfStack = (uint8_t *)pxTCB->pxEndOfStack;
    }
#    endif

    uxReturn = (UBaseType_t)prvTaskCheckFreeStackSpace(pucEndOfStack);

    return uxReturn;
}

#endif /* INCLUDE_uxTaskGetStackHighWaterMark */
/*-----------------------------------------------------------*/

#if (INCLUDE_vTaskDelete == 1)

static void prvDeleteTCB(TCB_t *pxTCB)
{
    /* This call is required specifically for the TriCore port.  It must be
    above the vPortFree() calls.  The call is also used by ports/demos that
    want to allocate and clean RAM statically. */
    portCLEAN_UP_TCB(pxTCB);

/* Free up the memory allocated by the scheduler for the task.  It is up
to the task to free any memory allocated at the application level.
See the third party link http://www.nadler.com/embedded/newlibAndFreeRTOS.html
for additional information. */
#    if (configUSE_NEWLIB_REENTRANT == 1)
    {
        _reclaim_reent(&(pxTCB->xNewLib_reent));
    }
#    endif /* configUSE_NEWLIB_REENTRANT */

#    if ( \
        (configSUPPORT_DYNAMIC_ALLOCATION == 1) && \
        (configSUPPORT_STATIC_ALLOCATION == 0) && \
        (portUSING_MPU_WRAPPERS == 0))
    {
        /* The task can only have been allocated dynamically - free both
        the stack and TCB. */
        vPortFree(pxTCB->pxStack);
        vPortFree(pxTCB);
    }
#    elif ( \
        tskSTATIC_AND_DYNAMIC_ALLOCATION_POSSIBLE != \
        0) /*lint !e731 !e9029 Macro has been consolidated for readability \
              reasons. */
    {
        /* The task could have been allocated statically or dynamically, so
        check what was statically allocated before trying to free the
        memory. */
        if (pxTCB->ucStaticallyAllocated ==
            tskDYNAMICALLY_ALLOCATED_STACK_AND_TCB) {
            /* Both the stack and TCB were allocated dynamically, so both
            must be freed. */
            vPortFree(pxTCB->pxStack);
            vPortFree(pxTCB);
        } else if (
            pxTCB->ucStaticallyAllocated ==
            tskSTATICALLY_ALLOCATED_STACK_ONLY) {
            /* Only the stack was statically allocated, so the TCB is the
            only memory that must be freed. */
            vPortFree(pxTCB);
        } else {
            /* Neither the stack nor the TCB were allocated dynamically, so
            nothing needs to be freed. */
            configASSERT(
                pxTCB->ucStaticallyAllocated ==
                tskSTATICALLY_ALLOCATED_STACK_AND_TCB);
            mtCOVERAGE_TEST_MARKER();
        }
    }
#    endif /* configSUPPORT_DYNAMIC_ALLOCATION */
}

#endif /* INCLUDE_vTaskDelete */
/*-----------------------------------------------------------*/

static void prvResetNextTaskUnblockTime(void)
{
    TCB_t *pxTCB;

    if (listLIST_IS_EMPTY(pxDelayedTaskList) != pdFALSE) {
        /* The new current delayed list is empty.  Set xNextTaskUnblockTime to
        the maximum possible value so it is	extremely unlikely that the
        if( xTickCount >= xNextTaskUnblockTime ) test will pass until
        there is an item in the delayed list. */
        xNextTaskUnblockTime = portMAX_DELAY;
    } else {
        /* The new current delayed list is not empty, get the value of
        the item at the head of the delayed list.  This is the time at
        which the task at the head of the delayed list should be removed
        from the Blocked state. */
        (pxTCB) = listGET_OWNER_OF_HEAD_ENTRY(
            pxDelayedTaskList); /*lint !e9079 void * is used as this macro is
                                   used with timers and co-routines too.
                                   Alignment is known to be fine as the type of
                                   the pointer stored and retrieved is the same.
                                 */
        xNextTaskUnblockTime =
            listGET_LIST_ITEM_VALUE(&((pxTCB)->xStateListItem));
    }
}
/*-----------------------------------------------------------*/

#if ((INCLUDE_xTaskGetCurrentTaskHandle == 1) || (configUSE_MUTEXES == 1))

TaskHandle_t xTaskGetCurrentTaskHandle(void)
{
    TaskHandle_t xReturn;

    /* A critical section is not required as this is not called from
    an interrupt and the current TCB will always be the same for any
    individual execution thread. */
    xReturn = pxCurrentTCB;

    return xReturn;
}

#endif /* ( ( INCLUDE_xTaskGetCurrentTaskHandle == 1 ) || ( configUSE_MUTEXES \
          == 1 ) ) */
/*-----------------------------------------------------------*/

#if ((INCLUDE_xTaskGetSchedulerState == 1) || (configUSE_TIMERS == 1))

BaseType_t xTaskGetSchedulerState(void)
{
    BaseType_t xReturn;

    if (xSchedulerRunning == pdFALSE) {
        xReturn = taskSCHEDULER_NOT_STARTED;
    } else {
        if (uxSchedulerSuspended == (UBaseType_t)pdFALSE) {
            xReturn = taskSCHEDULER_RUNNING;
        } else {
            xReturn = taskSCHEDULER_SUSPENDED;
        }
    }

    return xReturn;
}

#endif /* ( ( INCLUDE_xTaskGetSchedulerState == 1 ) || ( configUSE_TIMERS == 1 \
          ) ) */
/*-----------------------------------------------------------*/

#if (configUSE_MUTEXES == 1)

BaseType_t xTaskPriorityInherit(TaskHandle_t const pxMutexHolder)
{
    TCB_t *const pxMutexHolderTCB = pxMutexHolder;
    BaseType_t xReturn = pdFALSE;

    /* If the mutex was given back by an interrupt while the queue was
    locked then the mutex holder might now be NULL.  _RB_ Is this still
    needed as interrupts can no longer use mutexes? */
    if (pxMutexHolder != NULL) {
        /* If the holder of the mutex has a priority below the priority of
        the task attempting to obtain the mutex then it will temporarily
        inherit the priority of the task attempting to obtain the mutex. */
        if (pxMutexHolderTCB->uxPriority < pxCurrentTCB->uxPriority) {
            /* Adjust the mutex holder state to account for its new
            priority.  Only reset the event list item value if the value is
            not being used for anything else. */
            if ((listGET_LIST_ITEM_VALUE(&(pxMutexHolderTCB->xEventListItem)) &
                 taskEVENT_LIST_ITEM_VALUE_IN_USE) == 0UL) {
                listSET_LIST_ITEM_VALUE(
                    &(pxMutexHolderTCB->xEventListItem),
                    (TickType_t)configMAX_PRIORITIES -
                        (TickType_t)pxCurrentTCB
                            ->uxPriority); /*lint !e961 MISRA exception as the
                                              casts are only redundant for some
                                              ports. */
            } else {
                mtCOVERAGE_TEST_MARKER();
            }

            /* If the task being modified is in the ready state it will need
            to be moved into a new list. */
            if (listIS_CONTAINED_WITHIN(
                    &(pxReadyTasksLists[pxMutexHolderTCB->uxPriority]),
                    &(pxMutexHolderTCB->xStateListItem)) != pdFALSE) {
                if (uxListRemove(&(pxMutexHolderTCB->xStateListItem)) ==
                    (UBaseType_t)0) {
                    /* It is known that the task is in its ready list so
                    there is no need to check again and the port level
                    reset macro can be called directly. */
                    portRESET_READY_PRIORITY(
                        pxMutexHolderTCB->uxPriority, uxTopReadyPriority);
                } else {
                    mtCOVERAGE_TEST_MARKER();
                }

                /* Inherit the priority before being moved into the new list. */
                pxMutexHolderTCB->uxPriority = pxCurrentTCB->uxPriority;
                prvAddTaskToReadyList(pxMutexHolderTCB);
            } else {
                /* Just inherit the priority. */
                pxMutexHolderTCB->uxPriority = pxCurrentTCB->uxPriority;
            }

            traceTASK_PRIORITY_INHERIT(
                pxMutexHolderTCB, pxCurrentTCB->uxPriority);

            /* Inheritance occurred. */
            xReturn = pdTRUE;
        } else {
            if (pxMutexHolderTCB->uxBasePriority < pxCurrentTCB->uxPriority) {
                /* The base priority of the mutex holder is lower than the
                priority of the task attempting to take the mutex, but the
                current priority of the mutex holder is not lower than the
                priority of the task attempting to take the mutex.
                Therefore the mutex holder must have already inherited a
                priority, but inheritance would have occurred if that had
                not been the case. */
                xReturn = pdTRUE;
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
        }
    } else {
        mtCOVERAGE_TEST_MARKER();
    }

    return xReturn;
}

#endif /* configUSE_MUTEXES */
/*-----------------------------------------------------------*/

#if (configUSE_MUTEXES == 1)

BaseType_t xTaskPriorityDisinherit(TaskHandle_t const pxMutexHolder)
{
    TCB_t *const pxTCB = pxMutexHolder;
    BaseType_t xReturn = pdFALSE;

    if (pxMutexHolder != NULL) {
        /* A task can only have an inherited priority if it holds the mutex.
        If the mutex is held by a task then it cannot be given from an
        interrupt, and if a mutex is given by the holding task then it must
        be the running state task. */
        configASSERT(pxTCB == pxCurrentTCB);
        configASSERT(pxTCB->uxMutexesHeld);
        (pxTCB->uxMutexesHeld)--;

        /* Has the holder of the mutex inherited the priority of another
        task? */
        if (pxTCB->uxPriority != pxTCB->uxBasePriority) {
            /* Only disinherit if no other mutexes are held. */
            if (pxTCB->uxMutexesHeld == (UBaseType_t)0) {
                /* A task can only have an inherited priority if it holds
                the mutex.  If the mutex is held by a task then it cannot be
                given from an interrupt, and if a mutex is given by the
                holding task then it must be the running state task.  Remove
                the holding task from the ready/delayed list. */
                if (uxListRemove(&(pxTCB->xStateListItem)) == (UBaseType_t)0) {
                    taskRESET_READY_PRIORITY(pxTCB->uxPriority);
                } else {
                    mtCOVERAGE_TEST_MARKER();
                }

                /* Disinherit the priority before adding the task into the
                new	ready list. */
                traceTASK_PRIORITY_DISINHERIT(pxTCB, pxTCB->uxBasePriority);
                pxTCB->uxPriority = pxTCB->uxBasePriority;

                /* Reset the event list item value.  It cannot be in use for
                any other purpose if this task is running, and it must be
                running to give back the mutex. */
                listSET_LIST_ITEM_VALUE(
                    &(pxTCB->xEventListItem),
                    (TickType_t)configMAX_PRIORITIES -
                        (TickType_t)
                            pxTCB->uxPriority); /*lint !e961 MISRA exception as
                                                   the casts are only redundant
                                                   for some ports. */
                prvAddTaskToReadyList(pxTCB);

                /* Return true to indicate that a context switch is required.
                This is only actually required in the corner case whereby
                multiple mutexes were held and the mutexes were given back
                in an order different to that in which they were taken.
                If a context switch did not occur when the first mutex was
                returned, even if a task was waiting on it, then a context
                switch should occur when the last mutex is returned whether
                a task is waiting on it or not. */
                xReturn = pdTRUE;
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
        } else {
            mtCOVERAGE_TEST_MARKER();
        }
    } else {
        mtCOVERAGE_TEST_MARKER();
    }

    return xReturn;
}

#endif /* configUSE_MUTEXES */
/*-----------------------------------------------------------*/

#if (configUSE_MUTEXES == 1)

void vTaskPriorityDisinheritAfterTimeout(
    TaskHandle_t const pxMutexHolder,
    UBaseType_t uxHighestPriorityWaitingTask)
{
    TCB_t *const pxTCB = pxMutexHolder;
    UBaseType_t uxPriorityUsedOnEntry, uxPriorityToUse;
    const UBaseType_t uxOnlyOneMutexHeld = (UBaseType_t)1;

    if (pxMutexHolder != NULL) {
        /* If pxMutexHolder is not NULL then the holder must hold at least
        one mutex. */
        configASSERT(pxTCB->uxMutexesHeld);

        /* Determine the priority to which the priority of the task that
        holds the mutex should be set.  This will be the greater of the
        holding task's base priority and the priority of the highest
        priority task that is waiting to obtain the mutex. */
        if (pxTCB->uxBasePriority < uxHighestPriorityWaitingTask) {
            uxPriorityToUse = uxHighestPriorityWaitingTask;
        } else {
            uxPriorityToUse = pxTCB->uxBasePriority;
        }

        /* Does the priority need to change? */
        if (pxTCB->uxPriority != uxPriorityToUse) {
            /* Only disinherit if no other mutexes are held.  This is a
            simplification in the priority inheritance implementation.  If
            the task that holds the mutex is also holding other mutexes then
            the other mutexes may have caused the priority inheritance. */
            if (pxTCB->uxMutexesHeld == uxOnlyOneMutexHeld) {
                /* If a task has timed out because it already holds the
                mutex it was trying to obtain then it cannot of inherited
                its own priority. */
                configASSERT(pxTCB != pxCurrentTCB);

                /* Disinherit the priority, remembering the previous
                priority to facilitate determining the subject task's
                state. */
                traceTASK_PRIORITY_DISINHERIT(pxTCB, pxTCB->uxBasePriority);
                uxPriorityUsedOnEntry = pxTCB->uxPriority;
                pxTCB->uxPriority = uxPriorityToUse;

                /* Only reset the event list item value if the value is not
                being used for anything else. */
                if ((listGET_LIST_ITEM_VALUE(&(pxTCB->xEventListItem)) &
                     taskEVENT_LIST_ITEM_VALUE_IN_USE) == 0UL) {
                    listSET_LIST_ITEM_VALUE(
                        &(pxTCB->xEventListItem),
                        (TickType_t)configMAX_PRIORITIES -
                            (TickType_t)
                                uxPriorityToUse); /*lint !e961 MISRA exception
                                                     as the casts are only
                                                     redundant for some ports.
                                                   */
                } else {
                    mtCOVERAGE_TEST_MARKER();
                }

                /* If the running task is not the task that holds the mutex
                then the task that holds the mutex could be in either the
                Ready, Blocked or Suspended states.  Only remove the task
                from its current state list if it is in the Ready state as
                the task's priority is going to change and there is one
                Ready list per priority. */
                if (listIS_CONTAINED_WITHIN(
                        &(pxReadyTasksLists[uxPriorityUsedOnEntry]),
                        &(pxTCB->xStateListItem)) != pdFALSE) {
                    if (uxListRemove(&(pxTCB->xStateListItem)) ==
                        (UBaseType_t)0) {
                        /* It is known that the task is in its ready list so
                        there is no need to check again and the port level
                        reset macro can be called directly. */
                        portRESET_READY_PRIORITY(
                            pxTCB->uxPriority, uxTopReadyPriority);
                    } else {
                        mtCOVERAGE_TEST_MARKER();
                    }

                    prvAddTaskToReadyList(pxTCB);
                } else {
                    mtCOVERAGE_TEST_MARKER();
                }
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
        } else {
            mtCOVERAGE_TEST_MARKER();
        }
    } else {
        mtCOVERAGE_TEST_MARKER();
    }
}

#endif /* configUSE_MUTEXES */
/*-----------------------------------------------------------*/

#if (portCRITICAL_NESTING_IN_TCB == 1)

void vTaskEnterCritical(void)
{
    portDISABLE_INTERRUPTS();

    if (xSchedulerRunning != pdFALSE) {
        (pxCurrentTCB->uxCriticalNesting)++;

        /* This is not the interrupt safe version of the enter critical
        function so	assert() if it is being called from an interrupt
        context.  Only API functions that end in "FromISR" can be used in an
        interrupt.  Only assert if the critical nesting count is 1 to
        protect against recursive calls if the assert function also uses a
        critical section. */
        if (pxCurrentTCB->uxCriticalNesting == 1) {
            portASSERT_IF_IN_ISR();
        }
    } else {
        mtCOVERAGE_TEST_MARKER();
    }
}

#endif /* portCRITICAL_NESTING_IN_TCB */
/*-----------------------------------------------------------*/

#if (portCRITICAL_NESTING_IN_TCB == 1)

void vTaskExitCritical(void)
{
    if (xSchedulerRunning != pdFALSE) {
        if (pxCurrentTCB->uxCriticalNesting > 0U) {
            (pxCurrentTCB->uxCriticalNesting)--;

            if (pxCurrentTCB->uxCriticalNesting == 0U) {
                portENABLE_INTERRUPTS();
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
        } else {
            mtCOVERAGE_TEST_MARKER();
        }
    } else {
        mtCOVERAGE_TEST_MARKER();
    }
}

#endif /* portCRITICAL_NESTING_IN_TCB */
/*-----------------------------------------------------------*/

#if ( \
    (configUSE_TRACE_FACILITY == 1) && \
    (configUSE_STATS_FORMATTING_FUNCTIONS > 0))

static char *prvWriteNameToBuffer(char *pcBuffer, const char *pcTaskName)
{
    size_t x;

    /* Start by copying the entire string. */
    strcpy(pcBuffer, pcTaskName);

    /* Pad the end of the string with spaces to ensure columns line up when
    printed out. */
    for (x = strlen(pcBuffer); x < (size_t)(configMAX_TASK_NAME_LEN - 1); x++) {
        pcBuffer[x] = ' ';
    }

    /* Terminate. */
    pcBuffer[x] = (char)0x00;

    /* Return the new end of string. */
    return &(pcBuffer[x]);
}

#endif /* ( configUSE_TRACE_FACILITY == 1 ) && ( \
          configUSE_STATS_FORMATTING_FUNCTIONS > 0 ) */
/*-----------------------------------------------------------*/

#if ( \
    (configUSE_TRACE_FACILITY == 1) && \
    (configUSE_STATS_FORMATTING_FUNCTIONS > 0) && \
    (configSUPPORT_DYNAMIC_ALLOCATION == 1))

void vTaskList(char *pcWriteBuffer)
{
    TaskStatus_t *pxTaskStatusArray;
    UBaseType_t uxArraySize, x;
    char cStatus;

    /*
     * PLEASE NOTE:
     *
     * This function is provided for convenience only, and is used by many
     * of the demo applications.  Do not consider it to be part of the
     * scheduler.
     *
     * vTaskList() calls uxTaskGetSystemState(), then formats part of the
     * uxTaskGetSystemState() output into a human readable table that
     * displays task names, states and stack usage.
     *
     * vTaskList() has a dependency on the sprintf() C library function that
     * might bloat the code size, use a lot of stack, and provide different
     * results on different platforms.  An alternative, tiny, third party,
     * and limited functionality implementation of sprintf() is provided in
     * many of the FreeRTOS/Demo sub-directories in a file called
     * printf-stdarg.c (note printf-stdarg.c does not provide a full
     * snprintf() implementation!).
     *
     * It is recommended that production systems call uxTaskGetSystemState()
     * directly to get access to raw stats data, rather than indirectly
     * through a call to vTaskList().
     */

    /* Make sure the write buffer does not contain a string. */
    *pcWriteBuffer = (char)0x00;

    /* Take a snapshot of the number of tasks in case it changes while this
    function is executing. */
    uxArraySize = uxCurrentNumberOfTasks;

    /* Allocate an array index for each task.  NOTE!  if
    configSUPPORT_DYNAMIC_ALLOCATION is set to 0 then pvPortMalloc() will
    equate to NULL. */
    pxTaskStatusArray = pvPortMalloc(
        uxCurrentNumberOfTasks *
        sizeof(
            TaskStatus_t)); /*lint !e9079 All values returned by pvPortMalloc()
                               have at least the alignment required by the MCU's
                               stack and this allocation allocates a struct that
                               has the alignment requirements of a pointer. */

    if (pxTaskStatusArray != NULL) {
        /* Generate the (binary) data. */
        uxArraySize =
            uxTaskGetSystemState(pxTaskStatusArray, uxArraySize, NULL);

        /* Create a human readable table from the binary data. */
        for (x = 0; x < uxArraySize; x++) {
            switch (pxTaskStatusArray[x].eCurrentState) {
            case eRunning:
                cStatus = tskRUNNING_CHAR;
                break;

            case eReady:
                cStatus = tskREADY_CHAR;
                break;

            case eBlocked:
                cStatus = tskBLOCKED_CHAR;
                break;

            case eSuspended:
                cStatus = tskSUSPENDED_CHAR;
                break;

            case eDeleted:
                cStatus = tskDELETED_CHAR;
                break;

            case eInvalid: /* Fall through. */
            default: /* Should not get here, but it is included
                     to prevent static checking errors. */
                cStatus = (char)0x00;
                break;
            }

            /* Write the task name to the string, padding with spaces so it
            can be printed in tabular form more easily. */
            pcWriteBuffer = prvWriteNameToBuffer(
                pcWriteBuffer, pxTaskStatusArray[x].pcTaskName);

            /* Write the rest of the string. */
            sprintf(
                pcWriteBuffer,
                "\t%c\t%u\t%u\t%u\r\n",
                cStatus,
                (unsigned int)pxTaskStatusArray[x].uxCurrentPriority,
                (unsigned int)pxTaskStatusArray[x].usStackHighWaterMark,
                (unsigned int)pxTaskStatusArray[x]
                    .xTaskNumber); /*lint !e586 sprintf() allowed as this is
                                      compiled with many compilers and this is a
                                      utility function only - not part of the
                                      core kernel implementation. */
            pcWriteBuffer += strlen(
                pcWriteBuffer); /*lint !e9016 Pointer arithmetic ok on char
                                   pointers especially as in this case where it
                                   best denotes the intent of the code. */
        }

        /* Free the array again.  NOTE!  If configSUPPORT_DYNAMIC_ALLOCATION
        is 0 then vPortFree() will be #defined to nothing. */
        vPortFree(pxTaskStatusArray);
    } else {
        mtCOVERAGE_TEST_MARKER();
    }
}

#endif /* ( ( configUSE_TRACE_FACILITY == 1 ) && ( \
          configUSE_STATS_FORMATTING_FUNCTIONS > 0 ) && ( \
          configSUPPORT_DYNAMIC_ALLOCATION == 1 ) ) */
/*----------------------------------------------------------*/

#if ( \
    (configGENERATE_RUN_TIME_STATS == 1) && \
    (configUSE_STATS_FORMATTING_FUNCTIONS > 0) && \
    (configSUPPORT_DYNAMIC_ALLOCATION == 1))

void vTaskGetRunTimeStats(char *pcWriteBuffer)
{
    TaskStatus_t *pxTaskStatusArray;
    UBaseType_t uxArraySize, x;
    uint32_t ulTotalTime, ulStatsAsPercentage;

#    if (configUSE_TRACE_FACILITY != 1)
    {
#error configUSE_TRACE_FACILITY must also be set to 1 in FreeRTOSConfig.h to use vTaskGetRunTimeStats().
    }
#    endif

    /*
     * PLEASE NOTE:
     *
     * This function is provided for convenience only, and is used by many
     * of the demo applications.  Do not consider it to be part of the
     * scheduler.
     *
     * vTaskGetRunTimeStats() calls uxTaskGetSystemState(), then formats part
     * of the uxTaskGetSystemState() output into a human readable table that
     * displays the amount of time each task has spent in the Running state
     * in both absolute and percentage terms.
     *
     * vTaskGetRunTimeStats() has a dependency on the sprintf() C library
     * function that might bloat the code size, use a lot of stack, and
     * provide different results on different platforms.  An alternative,
     * tiny, third party, and limited functionality implementation of
     * sprintf() is provided in many of the FreeRTOS/Demo sub-directories in
     * a file called printf-stdarg.c (note printf-stdarg.c does not provide
     * a full snprintf() implementation!).
     *
     * It is recommended that production systems call uxTaskGetSystemState()
     * directly to get access to raw stats data, rather than indirectly
     * through a call to vTaskGetRunTimeStats().
     */

    /* Make sure the write buffer does not contain a string. */
    *pcWriteBuffer = (char)0x00;

    /* Take a snapshot of the number of tasks in case it changes while this
    function is executing. */
    uxArraySize = uxCurrentNumberOfTasks;

    /* Allocate an array index for each task.  NOTE!  If
    configSUPPORT_DYNAMIC_ALLOCATION is set to 0 then pvPortMalloc() will
    equate to NULL. */
    pxTaskStatusArray = pvPortMalloc(
        uxCurrentNumberOfTasks *
        sizeof(
            TaskStatus_t)); /*lint !e9079 All values returned by pvPortMalloc()
                               have at least the alignment required by the MCU's
                               stack and this allocation allocates a struct that
                               has the alignment requirements of a pointer. */

    if (pxTaskStatusArray != NULL) {
        /* Generate the (binary) data. */
        uxArraySize =
            uxTaskGetSystemState(pxTaskStatusArray, uxArraySize, &ulTotalTime);

        /* For percentage calculations. */
        ulTotalTime /= 100UL;

        /* Avoid divide by zero errors. */
        if (ulTotalTime > 0UL) {
            /* Create a human readable table from the binary data. */
            for (x = 0; x < uxArraySize; x++) {
                /* What percentage of the total run time has the task used?
                This will always be rounded down to the nearest integer.
                ulTotalRunTimeDiv100 has already been divided by 100. */
                ulStatsAsPercentage =
                    pxTaskStatusArray[x].ulRunTimeCounter / ulTotalTime;

                /* Write the task name to the string, padding with
                spaces so it can be printed in tabular form more
                easily. */
                pcWriteBuffer = prvWriteNameToBuffer(
                    pcWriteBuffer, pxTaskStatusArray[x].pcTaskName);

                if (ulStatsAsPercentage > 0UL) {
#    ifdef portLU_PRINTF_SPECIFIER_REQUIRED
                    {
                        sprintf(
                            pcWriteBuffer,
                            "\t%lu\t\t%lu%%\r\n",
                            pxTaskStatusArray[x].ulRunTimeCounter,
                            ulStatsAsPercentage);
                    }
#    else
                    {
                        /* sizeof( int ) == sizeof( long ) so a smaller
                        printf() library can be used. */
                        sprintf(
                            pcWriteBuffer,
                            "\t%u\t\t%u%%\r\n",
                            (unsigned int)pxTaskStatusArray[x].ulRunTimeCounter,
                            (unsigned int)
                                ulStatsAsPercentage); /*lint !e586 sprintf()
                                                         allowed as this is
                                                         compiled with many
                                                         compilers and this is a
                                                         utility function only -
                                                         not part of the core
                                                         kernel implementation.
                                                       */
                    }
#    endif
                } else {
/* If the percentage is zero here then the task has
consumed less than 1% of the total run time. */
#    ifdef portLU_PRINTF_SPECIFIER_REQUIRED
                    {
                        sprintf(
                            pcWriteBuffer,
                            "\t%lu\t\t<1%%\r\n",
                            pxTaskStatusArray[x].ulRunTimeCounter);
                    }
#    else
                    {
                        /* sizeof( int ) == sizeof( long ) so a smaller
                        printf() library can be used. */
                        sprintf(
                            pcWriteBuffer,
                            "\t%u\t\t<1%%\r\n",
                            (unsigned int)pxTaskStatusArray[x]
                                .ulRunTimeCounter); /*lint !e586 sprintf()
                                                       allowed as this is
                                                       compiled with many
                                                       compilers and this is a
                                                       utility function only -
                                                       not part of the core
                                                       kernel implementation. */
                    }
#    endif
                }

                pcWriteBuffer +=
                    strlen(pcWriteBuffer); /*lint !e9016 Pointer arithmetic ok
                                              on char pointers especially as in
                                              this case where it best denotes
                                              the intent of the code. */
            }
        } else {
            mtCOVERAGE_TEST_MARKER();
        }

        /* Free the array again.  NOTE!  If configSUPPORT_DYNAMIC_ALLOCATION
        is 0 then vPortFree() will be #defined to nothing. */
        vPortFree(pxTaskStatusArray);
    } else {
        mtCOVERAGE_TEST_MARKER();
    }
}

#endif /* ( ( configGENERATE_RUN_TIME_STATS == 1 ) && ( \
          configUSE_STATS_FORMATTING_FUNCTIONS > 0 ) && ( \
          configSUPPORT_STATIC_ALLOCATION == 1 ) ) */
/*-----------------------------------------------------------*/

TickType_t uxTaskResetEventItemValue(void)
{
    TickType_t uxReturn;

    uxReturn = listGET_LIST_ITEM_VALUE(&(pxCurrentTCB->xEventListItem));

    /* Reset the event list item to its normal value - so it can be used with
    queues and semaphores. */
    listSET_LIST_ITEM_VALUE(
        &(pxCurrentTCB->xEventListItem),
        ((TickType_t)configMAX_PRIORITIES -
         (TickType_t)pxCurrentTCB
             ->uxPriority)); /*lint !e961 MISRA exception as the casts are only
                                redundant for some ports. */

    return uxReturn;
}
/*-----------------------------------------------------------*/

#if (configUSE_MUTEXES == 1)

TaskHandle_t pvTaskIncrementMutexHeldCount(void)
{
    /* If xSemaphoreCreateMutex() is called before any tasks have been created
    then pxCurrentTCB will be NULL. */
    if (pxCurrentTCB != NULL) {
        (pxCurrentTCB->uxMutexesHeld)++;
    }

    return pxCurrentTCB;
}

#endif /* configUSE_MUTEXES */
/*-----------------------------------------------------------*/

#if (configUSE_TASK_NOTIFICATIONS == 1)

uint32_t ulTaskNotifyTake(BaseType_t xClearCountOnExit, TickType_t xTicksToWait)
{
    uint32_t ulReturn;

    taskENTER_CRITICAL();
    {
        /* Only block if the notification count is not already non-zero. */
        if (pxCurrentTCB->ulNotifiedValue == 0UL) {
            /* Mark this task as waiting for a notification. */
            pxCurrentTCB->ucNotifyState = taskWAITING_NOTIFICATION;

            if (xTicksToWait > (TickType_t)0) {
                prvAddCurrentTaskToDelayedList(xTicksToWait, pdTRUE);
                traceTASK_NOTIFY_TAKE_BLOCK();

                /* All ports are written to allow a yield in a critical
                section (some will yield immediately, others wait until the
                critical section exits) - but it is not something that
                application code should ever do. */
                portYIELD_WITHIN_API();
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
        } else {
            mtCOVERAGE_TEST_MARKER();
        }
    }
    taskEXIT_CRITICAL();

    taskENTER_CRITICAL();
    {
        traceTASK_NOTIFY_TAKE();
        ulReturn = pxCurrentTCB->ulNotifiedValue;

        if (ulReturn != 0UL) {
            if (xClearCountOnExit != pdFALSE) {
                pxCurrentTCB->ulNotifiedValue = 0UL;
            } else {
                pxCurrentTCB->ulNotifiedValue = ulReturn - (uint32_t)1;
            }
        } else {
            mtCOVERAGE_TEST_MARKER();
        }

        pxCurrentTCB->ucNotifyState = taskNOT_WAITING_NOTIFICATION;
    }
    taskEXIT_CRITICAL();

    return ulReturn;
}

#endif /* configUSE_TASK_NOTIFICATIONS */
/*-----------------------------------------------------------*/

#if (configUSE_TASK_NOTIFICATIONS == 1)

BaseType_t xTaskNotifyWait(
    uint32_t ulBitsToClearOnEntry,
    uint32_t ulBitsToClearOnExit,
    uint32_t *pulNotificationValue,
    TickType_t xTicksToWait)
{
    BaseType_t xReturn;

    taskENTER_CRITICAL();
    {
        /* Only block if a notification is not already pending. */
        if (pxCurrentTCB->ucNotifyState != taskNOTIFICATION_RECEIVED) {
            /* Clear bits in the task's notification value as bits may get
            set	by the notifying task or interrupt.  This can be used to
            clear the value to zero. */
            pxCurrentTCB->ulNotifiedValue &= ~ulBitsToClearOnEntry;

            /* Mark this task as waiting for a notification. */
            pxCurrentTCB->ucNotifyState = taskWAITING_NOTIFICATION;

            if (xTicksToWait > (TickType_t)0) {
                prvAddCurrentTaskToDelayedList(xTicksToWait, pdTRUE);
                traceTASK_NOTIFY_WAIT_BLOCK();

                /* All ports are written to allow a yield in a critical
                section (some will yield immediately, others wait until the
                critical section exits) - but it is not something that
                application code should ever do. */
                portYIELD_WITHIN_API();
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
        } else {
            mtCOVERAGE_TEST_MARKER();
        }
    }
    taskEXIT_CRITICAL();

    taskENTER_CRITICAL();
    {
        traceTASK_NOTIFY_WAIT();

        if (pulNotificationValue != NULL) {
            /* Output the current notification value, which may or may not
            have changed. */
            *pulNotificationValue = pxCurrentTCB->ulNotifiedValue;
        }

        /* If ucNotifyValue is set then either the task never entered the
        blocked state (because a notification was already pending) or the
        task unblocked because of a notification.  Otherwise the task
        unblocked because of a timeout. */
        if (pxCurrentTCB->ucNotifyState != taskNOTIFICATION_RECEIVED) {
            /* A notification was not received. */
            xReturn = pdFALSE;
        } else {
            /* A notification was already pending or a notification was
            received while the task was waiting. */
            pxCurrentTCB->ulNotifiedValue &= ~ulBitsToClearOnExit;
            xReturn = pdTRUE;
        }

        pxCurrentTCB->ucNotifyState = taskNOT_WAITING_NOTIFICATION;
    }
    taskEXIT_CRITICAL();

    return xReturn;
}

#endif /* configUSE_TASK_NOTIFICATIONS */
/*-----------------------------------------------------------*/

#if (configUSE_TASK_NOTIFICATIONS == 1)

BaseType_t xTaskGenericNotify(
    TaskHandle_t xTaskToNotify,
    uint32_t ulValue,
    eNotifyAction eAction,
    uint32_t *pulPreviousNotificationValue)
{
    TCB_t *pxTCB;
    BaseType_t xReturn = pdPASS;
    uint8_t ucOriginalNotifyState;

    configASSERT(xTaskToNotify);
    pxTCB = xTaskToNotify;

    taskENTER_CRITICAL();
    {
        if (pulPreviousNotificationValue != NULL) {
            *pulPreviousNotificationValue = pxTCB->ulNotifiedValue;
        }

        ucOriginalNotifyState = pxTCB->ucNotifyState;

        pxTCB->ucNotifyState = taskNOTIFICATION_RECEIVED;

        switch (eAction) {
        case eSetBits:
            pxTCB->ulNotifiedValue |= ulValue;
            break;

        case eIncrement:
            (pxTCB->ulNotifiedValue)++;
            break;

        case eSetValueWithOverwrite:
            pxTCB->ulNotifiedValue = ulValue;
            break;

        case eSetValueWithoutOverwrite:
            if (ucOriginalNotifyState != taskNOTIFICATION_RECEIVED) {
                pxTCB->ulNotifiedValue = ulValue;
            } else {
                /* The value could not be written to the task. */
                xReturn = pdFAIL;
            }
            break;

        case eNoAction:
            /* The task is being notified without its notify value being
            updated. */
            break;

        default:
            /* Should not get here if all enums are handled.
            Artificially force an assert by testing a value the
            compiler can't assume is const. */
            configASSERT(pxTCB->ulNotifiedValue == ~0UL);

            break;
        }

        traceTASK_NOTIFY();

        /* If the task is in the blocked state specifically to wait for a
        notification then unblock it now. */
        if (ucOriginalNotifyState == taskWAITING_NOTIFICATION) {
            (void)uxListRemove(&(pxTCB->xStateListItem));
            prvAddTaskToReadyList(pxTCB);

            /* The task should not have been on an event list. */
            configASSERT(
                listLIST_ITEM_CONTAINER(&(pxTCB->xEventListItem)) == NULL);

#    if (configUSE_TICKLESS_IDLE != 0)
            {
                /* If a task is blocked waiting for a notification then
                xNextTaskUnblockTime might be set to the blocked task's time
                out time.  If the task is unblocked for a reason other than
                a timeout xNextTaskUnblockTime is normally left unchanged,
                because it will automatically get reset to a new value when
                the tick count equals xNextTaskUnblockTime.  However if
                tickless idling is used it might be more important to enter
                sleep mode at the earliest possible time - so reset
                xNextTaskUnblockTime here to ensure it is updated at the
                earliest possible time. */
                prvResetNextTaskUnblockTime();
            }
#    endif

            if (pxTCB->uxPriority > pxCurrentTCB->uxPriority) {
                /* The notified task has a priority above the currently
                executing task so a yield is required. */
                taskYIELD_IF_USING_PREEMPTION();
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
        } else {
            mtCOVERAGE_TEST_MARKER();
        }
    }
    taskEXIT_CRITICAL();

    return xReturn;
}

#endif /* configUSE_TASK_NOTIFICATIONS */
/*-----------------------------------------------------------*/

#if (configUSE_TASK_NOTIFICATIONS == 1)

BaseType_t xTaskGenericNotifyFromISR(
    TaskHandle_t xTaskToNotify,
    uint32_t ulValue,
    eNotifyAction eAction,
    uint32_t *pulPreviousNotificationValue,
    BaseType_t *pxHigherPriorityTaskWoken)
{
    TCB_t *pxTCB;
    uint8_t ucOriginalNotifyState;
    BaseType_t xReturn = pdPASS;
    UBaseType_t uxSavedInterruptStatus;

    configASSERT(xTaskToNotify);

    /* RTOS ports that support interrupt nesting have the concept of a
    maximum	system call (or maximum API call) interrupt priority.
    Interrupts that are	above the maximum system call priority are keep
    permanently enabled, even when the RTOS kernel is in a critical section,
    but cannot make any calls to FreeRTOS API functions.  If configASSERT()
    is defined in FreeRTOSConfig.h then
    portASSERT_IF_INTERRUPT_PRIORITY_INVALID() will result in an assertion
    failure if a FreeRTOS API function is called from an interrupt that has
    been assigned a priority above the configured maximum system call
    priority.  Only FreeRTOS functions that end in FromISR can be called
    from interrupts	that have been assigned a priority at or (logically)
    below the maximum system call interrupt priority.  FreeRTOS maintains a
    separate interrupt safe API to ensure interrupt entry is as fast and as
    simple as possible.  More information (albeit Cortex-M specific) is
    provided on the following link:
    http://www.freertos.org/RTOS-Cortex-M3-M4.html */
    portASSERT_IF_INTERRUPT_PRIORITY_INVALID();

    pxTCB = xTaskToNotify;

    uxSavedInterruptStatus = portSET_INTERRUPT_MASK_FROM_ISR();
    {
        if (pulPreviousNotificationValue != NULL) {
            *pulPreviousNotificationValue = pxTCB->ulNotifiedValue;
        }

        ucOriginalNotifyState = pxTCB->ucNotifyState;
        pxTCB->ucNotifyState = taskNOTIFICATION_RECEIVED;

        switch (eAction) {
        case eSetBits:
            pxTCB->ulNotifiedValue |= ulValue;
            break;

        case eIncrement:
            (pxTCB->ulNotifiedValue)++;
            break;

        case eSetValueWithOverwrite:
            pxTCB->ulNotifiedValue = ulValue;
            break;

        case eSetValueWithoutOverwrite:
            if (ucOriginalNotifyState != taskNOTIFICATION_RECEIVED) {
                pxTCB->ulNotifiedValue = ulValue;
            } else {
                /* The value could not be written to the task. */
                xReturn = pdFAIL;
            }
            break;

        case eNoAction:
            /* The task is being notified without its notify value being
            updated. */
            break;

        default:
            /* Should not get here if all enums are handled.
            Artificially force an assert by testing a value the
            compiler can't assume is const. */
            configASSERT(pxTCB->ulNotifiedValue == ~0UL);
            break;
        }

        traceTASK_NOTIFY_FROM_ISR();

        /* If the task is in the blocked state specifically to wait for a
        notification then unblock it now. */
        if (ucOriginalNotifyState == taskWAITING_NOTIFICATION) {
            /* The task should not have been on an event list. */
            configASSERT(
                listLIST_ITEM_CONTAINER(&(pxTCB->xEventListItem)) == NULL);

            if (uxSchedulerSuspended == (UBaseType_t)pdFALSE) {
                (void)uxListRemove(&(pxTCB->xStateListItem));
                prvAddTaskToReadyList(pxTCB);
            } else {
                /* The delayed and ready lists cannot be accessed, so hold
                this task pending until the scheduler is resumed. */
                vListInsertEnd(&(xPendingReadyList), &(pxTCB->xEventListItem));
            }

            if (pxTCB->uxPriority > pxCurrentTCB->uxPriority) {
                /* The notified task has a priority above the currently
                executing task so a yield is required. */
                if (pxHigherPriorityTaskWoken != NULL) {
                    *pxHigherPriorityTaskWoken = pdTRUE;
                }

                /* Mark that a yield is pending in case the user is not
                using the "xHigherPriorityTaskWoken" parameter to an ISR
                safe FreeRTOS function. */
                xYieldPending = pdTRUE;
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
        }
    }
    portCLEAR_INTERRUPT_MASK_FROM_ISR(uxSavedInterruptStatus);

    return xReturn;
}

#endif /* configUSE_TASK_NOTIFICATIONS */
/*-----------------------------------------------------------*/

#if (configUSE_TASK_NOTIFICATIONS == 1)

void vTaskNotifyGiveFromISR(
    TaskHandle_t xTaskToNotify,
    BaseType_t *pxHigherPriorityTaskWoken)
{
    TCB_t *pxTCB;
    uint8_t ucOriginalNotifyState;
    UBaseType_t uxSavedInterruptStatus;

    configASSERT(xTaskToNotify);

    /* RTOS ports that support interrupt nesting have the concept of a
    maximum	system call (or maximum API call) interrupt priority.
    Interrupts that are	above the maximum system call priority are keep
    permanently enabled, even when the RTOS kernel is in a critical section,
    but cannot make any calls to FreeRTOS API functions.  If configASSERT()
    is defined in FreeRTOSConfig.h then
    portASSERT_IF_INTERRUPT_PRIORITY_INVALID() will result in an assertion
    failure if a FreeRTOS API function is called from an interrupt that has
    been assigned a priority above the configured maximum system call
    priority.  Only FreeRTOS functions that end in FromISR can be called
    from interrupts	that have been assigned a priority at or (logically)
    below the maximum system call interrupt priority.  FreeRTOS maintains a
    separate interrupt safe API to ensure interrupt entry is as fast and as
    simple as possible.  More information (albeit Cortex-M specific) is
    provided on the following link:
    http://www.freertos.org/RTOS-Cortex-M3-M4.html */
    portASSERT_IF_INTERRUPT_PRIORITY_INVALID();

    pxTCB = xTaskToNotify;

    uxSavedInterruptStatus = portSET_INTERRUPT_MASK_FROM_ISR();
    {
        ucOriginalNotifyState = pxTCB->ucNotifyState;
        pxTCB->ucNotifyState = taskNOTIFICATION_RECEIVED;

        /* 'Giving' is equivalent to incrementing a count in a counting
        semaphore. */
        (pxTCB->ulNotifiedValue)++;

        traceTASK_NOTIFY_GIVE_FROM_ISR();

        /* If the task is in the blocked state specifically to wait for a
        notification then unblock it now. */
        if (ucOriginalNotifyState == taskWAITING_NOTIFICATION) {
            /* The task should not have been on an event list. */
            configASSERT(
                listLIST_ITEM_CONTAINER(&(pxTCB->xEventListItem)) == NULL);

            if (uxSchedulerSuspended == (UBaseType_t)pdFALSE) {
                (void)uxListRemove(&(pxTCB->xStateListItem));
                prvAddTaskToReadyList(pxTCB);
            } else {
                /* The delayed and ready lists cannot be accessed, so hold
                this task pending until the scheduler is resumed. */
                vListInsertEnd(&(xPendingReadyList), &(pxTCB->xEventListItem));
            }

            if (pxTCB->uxPriority > pxCurrentTCB->uxPriority) {
                /* The notified task has a priority above the currently
                executing task so a yield is required. */
                if (pxHigherPriorityTaskWoken != NULL) {
                    *pxHigherPriorityTaskWoken = pdTRUE;
                }

                /* Mark that a yield is pending in case the user is not
                using the "xHigherPriorityTaskWoken" parameter in an ISR
                safe FreeRTOS function. */
                xYieldPending = pdTRUE;
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
        }
    }
    portCLEAR_INTERRUPT_MASK_FROM_ISR(uxSavedInterruptStatus);
}

#endif /* configUSE_TASK_NOTIFICATIONS */
/*-----------------------------------------------------------*/

#if (configUSE_TASK_NOTIFICATIONS == 1)

BaseType_t xTaskNotifyStateClear(TaskHandle_t xTask)
{
    TCB_t *pxTCB;
    BaseType_t xReturn;

    /* If null is passed in here then it is the calling task that is having
    its notification state cleared. */
    pxTCB = prvGetTCBFromHandle(xTask);

    taskENTER_CRITICAL();
    {
        if (pxTCB->ucNotifyState == taskNOTIFICATION_RECEIVED) {
            pxTCB->ucNotifyState = taskNOT_WAITING_NOTIFICATION;
            xReturn = pdPASS;
        } else {
            xReturn = pdFAIL;
        }
    }
    taskEXIT_CRITICAL();

    return xReturn;
}

#endif /* configUSE_TASK_NOTIFICATIONS */
/*-----------------------------------------------------------*/

#if (configUSE_TASK_NOTIFICATIONS == 1)

uint32_t ulTaskNotifyValueClear(TaskHandle_t xTask, uint32_t ulBitsToClear)
{
    TCB_t *pxTCB;
    uint32_t ulReturn;

    /* If null is passed in here then it is the calling task that is having
    its notification state cleared. */
    pxTCB = prvGetTCBFromHandle(xTask);

    taskENTER_CRITICAL();
    {
        /* Return the notification as it was before the bits were cleared,
        then clear the bit mask. */
        ulReturn = pxCurrentTCB->ulNotifiedValue;
        pxTCB->ulNotifiedValue &= ~ulBitsToClear;
    }
    taskEXIT_CRITICAL();

    return ulReturn;
}

#endif /* configUSE_TASK_NOTIFICATIONS */
/*-----------------------------------------------------------*/

#if ( \
    (configGENERATE_RUN_TIME_STATS == 1) && \
    (INCLUDE_xTaskGetIdleTaskHandle == 1))

uint32_t ulTaskGetIdleRunTimeCounter(void)
{
    return xIdleTaskHandle->ulRunTimeCounter;
}

#endif
/*-----------------------------------------------------------*/

static void prvAddCurrentTaskToDelayedList(
    TickType_t xTicksToWait,
    const BaseType_t xCanBlockIndefinitely)
{
    TickType_t xTimeToWake;
    const TickType_t xConstTickCount = xTickCount;

#if (INCLUDE_xTaskAbortDelay == 1)
    {
        /* About to enter a delayed list, so ensure the ucDelayAborted flag is
        reset to pdFALSE so it can be detected as having been set to pdTRUE
        when the task leaves the Blocked state. */
        pxCurrentTCB->ucDelayAborted = pdFALSE;
    }
#endif

    /* Remove the task from the ready list before adding it to the blocked list
    as the same list item is used for both lists. */
    if (uxListRemove(&(pxCurrentTCB->xStateListItem)) == (UBaseType_t)0) {
        /* The current task must be in a ready list, so there is no need to
        check, and the port reset macro can be called directly. */
        portRESET_READY_PRIORITY(
            pxCurrentTCB->uxPriority,
            uxTopReadyPriority); /*lint !e931 pxCurrentTCB cannot change as it
                                    is the calling task.
                                    pxCurrentTCB->uxPriority and
                                    uxTopReadyPriority cannot change as called
                                    with scheduler suspended or in a critical
                                    section. */
    } else {
        mtCOVERAGE_TEST_MARKER();
    }

#if (INCLUDE_vTaskSuspend == 1)
    {
        if ((xTicksToWait == portMAX_DELAY) &&
            (xCanBlockIndefinitely != pdFALSE)) {
            /* Add the task to the suspended task list instead of a delayed task
            list to ensure it is not woken by a timing event.  It will block
            indefinitely. */
            vListInsertEnd(
                &xSuspendedTaskList, &(pxCurrentTCB->xStateListItem));
        } else {
            /* Calculate the time at which the task should be woken if the event
            does not occur.  This may overflow but this doesn't matter, the
            kernel will manage it correctly. */
            xTimeToWake = xConstTickCount + xTicksToWait;

            /* The list item will be inserted in wake time order. */
            listSET_LIST_ITEM_VALUE(
                &(pxCurrentTCB->xStateListItem), xTimeToWake);

            if (xTimeToWake < xConstTickCount) {
                /* Wake time has overflowed.  Place this item in the overflow
                list. */
                vListInsert(
                    pxOverflowDelayedTaskList, &(pxCurrentTCB->xStateListItem));
            } else {
                /* The wake time has not overflowed, so the current block list
                is used. */
                vListInsert(pxDelayedTaskList, &(pxCurrentTCB->xStateListItem));

                /* If the task entering the blocked state was placed at the
                head of the list of blocked tasks then xNextTaskUnblockTime
                needs to be updated too. */
                if (xTimeToWake < xNextTaskUnblockTime) {
                    xNextTaskUnblockTime = xTimeToWake;
                } else {
                    mtCOVERAGE_TEST_MARKER();
                }
            }
        }
    }
#else /* INCLUDE_vTaskSuspend */
    {
        /* Calculate the time at which the task should be woken if the event
        does not occur.  This may overflow but this doesn't matter, the kernel
        will manage it correctly. */
        xTimeToWake = xConstTickCount + xTicksToWait;

        /* The list item will be inserted in wake time order. */
        listSET_LIST_ITEM_VALUE(&(pxCurrentTCB->xStateListItem), xTimeToWake);

        if (xTimeToWake < xConstTickCount) {
            /* Wake time has overflowed.  Place this item in the overflow list.
             */
            vListInsert(
                pxOverflowDelayedTaskList, &(pxCurrentTCB->xStateListItem));
        } else {
            /* The wake time has not overflowed, so the current block list is
             * used. */
            vListInsert(pxDelayedTaskList, &(pxCurrentTCB->xStateListItem));

            /* If the task entering the blocked state was placed at the head of
            the list of blocked tasks then xNextTaskUnblockTime needs to be
            updated too. */
            if (xTimeToWake < xNextTaskUnblockTime) {
                xNextTaskUnblockTime = xTimeToWake;
            } else {
                mtCOVERAGE_TEST_MARKER();
            }
        }

        /* Avoid compiler warning when INCLUDE_vTaskSuspend is not 1. */
        (void)xCanBlockIndefinitely;
    }
#endif /* INCLUDE_vTaskSuspend */
}

/* Code below here allows additional code to be inserted into this source file,
especially where access to file scope functions and data is needed (for example
when performing module tests). */

#ifdef FREERTOS_MODULE_TEST
#    include "tasks_test_access_functions.h"
#endif

#if (configINCLUDE_FREERTOS_TASK_C_ADDITIONS_H == 1)

#    include "freertos_tasks_c_additions.h"

#    ifdef FREERTOS_TASKS_C_ADDITIONS_INIT
static void freertos_tasks_c_additions_init(void)
{
    FREERTOS_TASKS_C_ADDITIONS_INIT();
}
#    endif

#endif
